needs-original-game

Platform All PS184 PS234 PS31 PSP6 N64121 GameCube50 Wii20 NES8 SNES22 Game Boy/GBC15 GBA30 DS14 Mega Drive2 Saturn1 Dreamcast4 Xbox14 Xbox 360134 Arcade7 PC (classic)230 DOS81

Category All Decomp208 Recomp294 Native Port200 Engine Rewrite168 Built on the Code7 Patch / Enhancement1

168 results

Engine Rewrite · PC (classic) OpenRCT2 RollerCoaster Tycoon 2 Open-source re-implementation of RollerCoaster Tycoon 2 with modern-platform support, an improved interface and cooperative multiplayer. 🔥 0🧊 0 16k

Engine Rewrite · PC (classic) openage Age of Empires II Volunteer-built free engine clone of the Genie Engine behind Age of Empires, Age of Empires II and Star Wars: Galactic Battlegrounds. 🔥 0🧊 0 15k

Engine Rewrite · PC (classic) OpenDiablo2 Diablo II Archived Go engine that plays Diablo II with your own copy; development moved to the Abyss Engine project. 🔥 0🧊 0 11k

Engine Rewrite · PC (classic) DevilutionX Diablo Port of Diablo and Hellfire for modern systems with engine improvements, bug fixes and optional quality-of-life features. 🔥 0🧊 0 9.8k

Engine Rewrite · PC (classic) OpenTTD Transport Tycoon Deluxe Open-source transport simulation game based on Transport Tycoon Deluxe, with multiplayer, add-on content and modern platform support. 🔥 0🧊 0 8.4k

Engine Rewrite · PC (classic) OpenMW The Elder Scrolls III: Morrowind Open-source open-world RPG engine that plays The Elder Scrolls III: Morrowind, with improved graphics and its own editor, OpenMW-CS. 🔥 0🧊 0 6.6k

Engine Rewrite · PC (classic) VCMI Heroes of Might and Magic III Open-source engine for Heroes of Might and Magic III with modding support, a map editor and builds for desktop and mobile. 🔥 0🧊 0 5.9k

Engine Rewrite · PC (classic) OpenSC2K SimCity 2000 Open-source remake of SimCity 2000 built with Rust and Godot for Windows, Linux and macOS; needs your own copy of the game. 🔥 0🧊 0 5.3k

Engine Rewrite · DOS CorsixTH Theme Hospital Open-source reimplementation of Bullfrog's Theme Hospital for Windows, macOS, Linux and BSD, with high resolutions and the full campaign playable. 🔥 0🧊 0 4.6k

Engine Rewrite · Game Boy/GBC G1R Deluxe (Gen1Recomp) Pokémon Gen 1-3 Native Lua and LÖVE2D recreation of Pokémon generations 1 to 3 that reads game data from a ROM you supply. 🔥 0🧊 0 3.9k

Engine Rewrite · DOS Daggerfall Unity The Elder Scrolls II: Daggerfall Open-source recreation of The Elder Scrolls II: Daggerfall in Unity, with quality-of-life improvements and extensive mod support. 🔥 0🧊 0 3.5k

Engine Rewrite · PC (classic) fheroes2 Heroes of Might and Magic II Open-source rewrite of the Heroes of Might and Magic II engine with high-resolution graphics, improved AI and many fixes. 🔥 0🧊 0 3.5k

Engine Rewrite · PC (classic) Julius Caesar III Open-source re-implementation of Caesar III with identical game logic, widescreen support and ports for desktop, Android and handhelds. 🔥 0🧊 0 3.4k

Engine Rewrite · PS1 wipEout Rewrite WipeOut Work-in-progress C re-implementation of the 1995 PSX game wipEout, with SDL2 and Sokol backends and a web version. 🔥 0🧊 0 3k

Engine Rewrite · PC (classic) Fallout Community Edition Fallout Re-implementation of Fallout that keeps the original gameplay and adds engine bugfixes and quality-of-life improvements across platforms. 🔥 0🧊 0 2.9k

Engine Rewrite · PC (classic) DiabloWeb Diablo Diablo 1 compiled to WebAssembly so it runs in a web browser, including on phones, with the shareware version playable anywhere. 🔥 0🧊 0 2.9k

Engine Rewrite · PC (classic) San Andreas Unity Grand Theft Auto: San Andreas Open-source reimplementation of the GTA San Andreas engine in Unity, focused on gameplay, multiplayer and easy modding. 🔥 0🧊 0 2.6k

Engine Rewrite · PC (classic) OpenRW Grand Theft Auto III Cross-platform open-source re-implementation of Grand Theft Auto III that needs a legitimate copy of the PC game. 🔥 0🧊 0 2.2k

Engine Rewrite · DOS OpenXcom X-COM: UFO Defense Open-source clone of X-COM: UFO Defense and Terror From the Deep written in C++ and SDL, using resources from the originals. 🔥 0🧊 0 2.2k

Engine Rewrite · PC (classic) freeablo Diablo Archived cross-platform reimplementation of the Diablo 1 engine that needs the original game data and only reached a base of the game. 🔥 0🧊 0 2.2k

Engine Rewrite · PC (classic) Augustus Caesar III Fork of Julius for Caesar III that adds gameplay changes such as roadblocks and a global labour pool, plus scenario sharing. 🔥 0🧊 0 2.1k

Engine Rewrite · DOS SDLPAL Chinese Paladin (PAL) SDL-based cross-platform reimplementation of the Chinese RPG Legend of Sword and Fairy (PAL), with an online demo. 🔥 0🧊 0 2k

Engine Rewrite · PC (classic) OpenLoco Chris Sawyer's Locomotion Open-source re-implementation of Chris Sawyer's Locomotion, the transport-company sim that followed Transport Tycoon. 🔥 0🧊 0 1.9k

Engine Rewrite · DOS OpenDUNE Dune II Open-source re-creation of Westwood's Dune II written in portable C that runs natively on many operating systems. 🔥 0🧊 0 1.7k

Engine Rewrite · PC (classic) OpenSAGE SAGE engine (C&C Generals, BFME) Early-stage C# re-implementation of the SAGE RTS engine behind Command & Conquer: Generals and Zero Hour; not yet playable. 🔥 0🧊 0 1.6k

Engine Rewrite · PC (classic) OpenGothic Gothic I-III / Chronicles of Myrtana Open-source re-implementation of Gothic 2: Night of the Raven that completes the main quest and addon with modern graphics APIs. 🔥 0🧊 0 1.6k

Engine Rewrite · PC (classic) openblack Black & White Open-source engine that reimplements Black & White (2001) in modern C++ with OpenGL and Vulkan rendering. 🔥 0🧊 0 1.6k

Engine Rewrite · PC (classic) OpenTomb Tomb Raider I-V (classic) Inactive open-source engine remake for playing classic Tomb Raider 1 to 5 and custom TRLE levels; the authors point to TombEngine. 🔥 0🧊 0 1.4k

Engine Rewrite · PC (classic) doukutsu-rs Cave Story Faithful Rust remake of the Cave Story engine with quality-of-life improvements, builds for desktop and Android, and support for several data sets. 🔥 0🧊 0 1.3k

Engine Rewrite · PC (classic) GemRB BioWare Infinity Engine games (Baldur's Gate, Icewind Dale...) Portable open-source reimplementation of the Infinity Engine behind Baldur's Gate, Icewind Dale and Planescape: Torment. 🔥 0🧊 0 1.3k

Engine Rewrite · PC (classic) OpenSpades Ace of Spades 0.75 Compatible open-source client for Ace of Spades 0.75 that connects to vanilla, pyspades and pysnip servers. 🔥 0🧊 0 1.2k

Engine Rewrite · PC (classic) Diablerie Diablo II Early-stage recreation of Diablo II in Unity that runs with data from your own copy of Diablo II: Lord of Destruction. 🔥 0🧊 0 1.2k

Engine Rewrite · PC (classic) xoreos BioWare Aurora engine (NWN, KotOR...) Pre-alpha open-source reimplementation of BioWare's Aurora engine, targeting Neverwinter Nights, Knights of the Old Republic and more. 🔥 0🧊 0 1.2k

Engine Rewrite · DOS The Force Engine Star Wars: Dark Forces / Outlaws Modern replacement for the Jedi Engine of Star Wars: Dark Forces, with higher resolutions, mouselook and mod support; Outlaws is planned. 🔥 0🧊 0 1.2k

Engine Rewrite · PC (classic) Surreal Engine Unreal Engine 1 games Reimplementation of Unreal Engine 1 focused on making Unreal (Gold) and Unreal Tournament (UT99) playable. 🔥 0🧊 0 1.1k

Engine Rewrite · PC (classic) Riiablo Diablo II Early attempt to rebuild Diablo II from scratch in Java and LibGDX using your own original assets, with flexible aspect ratios. 🔥 0🧊 0 1.1k

Engine Rewrite · DOS C-Dogs SDL Cyberdogs (C-Dogs) Classic overhead run-and-gun game for up to four players in co-op or deathmatch, with over 100 user-made campaigns. 🔥 0🧊 0 1.1k

Engine Rewrite · PC (classic) Pikachu Volleyball Pikachu Volleyball JavaScript reimplementation of the 1997 Windows game Pikachu Volleyball, built by reverse engineering its physics engine and AI, playable in the browser. 🔥 0🧊 0 1.1k

Engine Rewrite · PC (classic) TRX: Tomb Raider I-III Community Edition Tomb Raider I-III (classic) Open-source reimplementation of Tomb Raider 1, 2 and 3 in a single engine, with enhancements, bugfixes and custom level support. 🔥 0🧊 0 1k

Engine Rewrite · DOS Rigel Engine Duke Nukem II Modern C++ re-implementation of Duke Nukem II that works as a drop-in replacement for the original DOS executable. 🔥 0🧊 0 1k

Engine Rewrite · PC (classic) FreeSO The Sims Online Full reimplementation of The Sims Online in MonoGame, now a technology base for other servers, with hi-res output and taller houses. 🔥 0🧊 0 983

Engine Rewrite · PC (classic) Falltergeist Fallout 2 Open-source cross-platform Fallout 2 engine written in C++ and SDL that plays the game with your own data files. 🔥 0🧊 0 887

Engine Rewrite · Arcade Cannonball OutRun Enhanced engine for the OutRun arcade game, rewritten from 68000 and Z80 assembler into C++ with higher frame rates and widescreen. 🔥 0🧊 0 880

Engine Rewrite · PC (classic) OpenEnroth Might and Magic VI-VIII Open reimplementation of the Might and Magic VI-VIII engine; Might and Magic VII is playable today with MM6 and MM8 planned. 🔥 0🧊 0 871

Engine Rewrite · PC (classic) OpenNFS Need for Speed (classic series) Early-stage modern engine that unpacks the original data of the classic Need for Speed games 1 to 5 on PC and PSX. 🔥 0🧊 0 845

Engine Rewrite · PC (classic) OpenMoHAA Medal of Honor: Allied Assault Open re-implementation of Medal of Honor: Allied Assault and its expansions with ioquake3 fixes, bots and cross-platform support. 🔥 0🧊 0 831

Engine Rewrite · PC (classic) Aleph One Marathon 2 (Bungie) Open-source continuation of Bungie's Marathon 2 engine that plays Marathon, Marathon 2, Marathon Infinity and third-party content. 🔥 0🧊 0 813

Engine Rewrite · GameCube Metaforce Metroid Prime Reverse-engineered native reimplementation of the Metroid Prime engine, recently rewritten on top of the matching decompilation. 🔥 0🧊 0 797

Engine Rewrite · Xbox 360 Skate 3 Rust Engine Skate 3 Rust and Bevy skating project built from Skate 3 reverse-engineering research, with tricks, grinds and custom map support. 🔥 0🧊 0 738

Engine Rewrite · PC (classic) Vangers Vangers Open-source build of Vangers, the racing and RPG hybrid, now on SDL 3 with gamepad support and a TOML settings file. 🔥 0🧊 0 737

Engine Rewrite · PC (classic) Jazz² Resurrection Jazz Jackrabbit 2 Native C++ reimplementation of Jazz Jackrabbit 2 for Windows, Linux, macOS, Steam Deck and Android, using your original game files. 🔥 0🧊 0 715

Engine Rewrite · PC (classic) benilla World of Warcraft 1.12.1 (client) A from-scratch World of Warcraft 1.12.1 client written in Rust and Bevy that connects to a 1.12.1 server and reads your own install's data. 🔥 0🧊 0 714

Engine Rewrite · PC (classic) Thyme Command & Conquer: Generals - Zero Hour Open-source re-implementation of Command & Conquer: Generals - Zero Hour for Windows that aims to fix bugs and enable new platforms. 🔥 0🧊 0 695

Engine Rewrite · DOS Exult Ultima VII Ultima VII engine for modern systems that plays The Black Gate and Serpent Isle using the data files from your own copy. 🔥 0🧊 0 693

Engine Rewrite · PC (classic) OpenVIII Final Fantasy VIII Archived open-source Final Fantasy VIII engine in C# on MonoGame, aimed at Windows and Linux with mobile versions planned. 🔥 0🧊 0 673

Engine Rewrite · PC (classic) OpenCiv3 Civilization III Open-source, mod-oriented remake of Civilization III built with Godot and C#, currently in an early pre-alpha state. 🔥 0🧊 0 667

Engine Rewrite · PC (classic) REGoth Gothic I-II (zEngine) Open-source reimplementation of the zEngine behind Gothic and Gothic II; the project has since restarted in a new repository. 🔥 0🧊 0 654

Engine Rewrite · PC (classic) GLSMAC Sid Meier's Alpha Centauri Unofficial OpenGL and SDL2 reimplementation of Sid Meier's Alpha Centauri and Alien Crossfire, with a rewritten engine and network code. 🔥 0🧊 0 638

Engine Rewrite · PC (classic) Librelancer Freelancer Open-source engine for Freelancer whose development has moved to Codeberg; this GitHub repository is archived. 🔥 0🧊 0 612

Engine Rewrite · PC (classic) OpenApoc X-COM: Apocalypse Open-source reimplementation of X-COM: Apocalypse in C++ and SDL2 with full mod support, using your original game files. 🔥 0🧊 0 597

Engine Rewrite · DOS Return To The Roots The Settlers II Fan rewrite of The Settlers II with internet multiplayer and support for modern systems, using the original game's graphics and sounds. 🔥 0🧊 0 596

Engine Rewrite · PC (classic) Jazz² Resurrection (Releases) Jazz Jackrabbit 2 Release page for Jazz² Resurrection, the Jazz Jackrabbit 2 reimplementation, now fully rewritten in the jazz2-native repository. 🔥 0🧊 0 577

Engine Rewrite · PC (classic) Richter Quake Pre-alpha Quake engine written in Rust whose client can already connect to original Quake servers and play back demos. 🔥 0🧊 0 570

Engine Rewrite · PC (classic) Carnage3D Grand Theft Auto (1) Early-stage open-source remake of the original Grand Theft Auto that runs on Windows, Linux and even in the browser. 🔥 0🧊 0 568

Engine Rewrite · PC (classic) NXEngine-evo Cave Story Upgraded and refactored version of the NXEngine Cave Story engine with SDL2, widescreen, mod support and Vita and Switch builds. 🔥 0🧊 0 549

Engine Rewrite · PC (classic) Ambermoon.net Ambermoon Complete C# rewrite of the Amiga RPG Ambermoon for Windows, Linux and macOS, including the Ambermoon Advanced extension. 🔥 0🧊 0 540

Engine Rewrite · PC (classic) JA2 Stracciatella Jagged Alliance 2 Community-driven port of Jagged Alliance 2 to more platforms, fixing bugs and adding a mod development platform. 🔥 0🧊 0 540

Engine Rewrite · PC (classic) Meridian 59 Meridian 59 Source code for the classic MMORPG Meridian 59, including the client, server, Blakod compiler and room editor, built with Visual Studio. 🔥 0🧊 0 518

Engine Rewrite · PC (classic) OpenClaw Captain Claw Multiplatform C++ reimplementation of the 1997 platformer Captain Claw, written from scratch to use your original game archive. 🔥 0🧊 0 515

Engine Rewrite · PC (classic) OpenKeeper Dungeon Keeper 2 Open-source Java remake of Dungeon Keeper II using JMonkeyEngine and the original game assets. 🔥 0🧊 0 506

Engine Rewrite · PC (classic) REGoth-bs Gothic I-II Restart of the REGoth project: an open-source reimplementation of the zEngine behind Gothic and Gothic II using modern technologies. 🔥 0🧊 0 499

Engine Rewrite · PC (classic) Simitone The Sims Alternative C# Windows frontend for The Sims 1 based on FreeSO, with a 3D view, modern UI resolutions and better performance. 🔥 0🧊 0 499

Engine Rewrite · PC (classic) vange-rs Vangers Rust remake of Vangers with GPU-accelerated graphics through wgpu, including a voxelized ray-traced terrain renderer. 🔥 0🧊 0 488

Engine Rewrite · PC (classic) donut The Simpsons: Hit & Run Open-source reimplementation of The Simpsons: Hit & Run in modern C++ and OpenGL, using the original game assets. 🔥 0🧊 0 485

Engine Rewrite · DOS OpenOMF One Must Fall 2097 Open-source remake of One Must Fall 2097 with modern networking and builds for Linux, Windows, macOS and BSD. 🔥 0🧊 0 484

Engine Rewrite · PC (classic) Ryzom Core Ryzom Open-source MMORPG framework on the NeL engine, with the client, server and tools code behind the Ryzom game, maintained by the community. 🔥 0🧊 0 469

Engine Rewrite · PC (classic) OpenTS2 The Sims 2 Open-source reimplementation of The Sims 2 in Unity, at an early stage with a main menu and basic neighborhood view. 🔥 0🧊 0 431

Engine Rewrite · PC (classic) Chariot Age of Empires Early Rust reimplementation of the Age of Empires (1997) engine, so far a demo of the original game assets loading. 🔥 0🧊 0 431

Engine Rewrite · PC (classic) TheXTech Super Mario Bros. X (SMBX) C++ rewrite of the Super Mario Bros. X (SMBX 1.3) engine for modern and non-Windows platforms, reproducing the old engine with new features. 🔥 0🧊 0 418

Engine Rewrite · DOS OpenJazz Jazz Jackrabbit Free, open-source version of the classic Jazz Jackrabbit games for Windows, macOS, Linux, BSD, consoles and handhelds, plus a web port. 🔥 0🧊 0 409

Engine Rewrite · Game Boy/GBC gen2recomp Pokémon Gold/Silver/Crystal (recreation) LÖVE2D Lua recreation of Pokémon Gold, Silver and Crystal that imports game data from a ROM you provide, forked from Gen1Recomp. 🔥 0🧊 0 384

Engine Rewrite · PC (classic) KaM Remake Knights and Merchants Archived Delphi remake of Knights and Merchants: The Shattered Kingdom with online multiplayer and engine bug fixes, reusing the original resource files. 🔥 0🧊 0 377

Engine Rewrite · PC (classic) OpenDiablo2 Diablo II Archived, very early implementation of Diablo II on the Abyss Engine that reads the MPQ files from your own legal copy; not yet playable. 🔥 0🧊 0 370

Engine Rewrite · DOS Dune II - The Maker Dune II Remake of Dune II - The Building of a Dynasty with higher resolutions, zooming, multiselect and skirmish play. 🔥 0🧊 0 368

Engine Rewrite · PC (classic) Gish Gish Open-source release of the physics platformer Gish, with build instructions for Linux, Windows and macOS. 🔥 0🧊 0 355

Engine Rewrite · PC (classic) OpenSWE1R Star Wars Episode I: Racer Open-source port of Star Wars Episode I: Racer that patches open code into the original game at runtime, using emulation for portability. 🔥 0🧊 0 350

Engine Rewrite · PC (classic) OpenRealm Warcraft III Quake-style C engine for Blizzard-era game data, playing Warcraft III with experimental World of Warcraft and StarCraft II targets, using data you own. 🔥 0🧊 0 344

Engine Rewrite · DOS FreeSerf The Settlers (Serf City) Open-source clone of Settlers 1 (Serf City) that plays with the data files from your own DOS or Amiga copy. 🔥 0🧊 0 339

Engine Rewrite · DOS UnderworldGodot Ultima Pre-alpha engine recreation of Ultima Underworld and Ultima Underworld 2 built in Godot. 🔥 0🧊 0 328

Engine Rewrite · PC (classic) OpenTIE Star Wars: TIE Fighter Open-source reimplementation of Star Wars: TIE Fighter for Windows, macOS and Linux that runs the original game data. 🔥 0🧊 0 328

Engine Rewrite · DOS Open Imperium Galactica Imperium Galactica Open-source Java reimplementation of the 4X space strategy game Imperium Galactica that runs standalone. 🔥 0🧊 0 326

Engine Rewrite · PC (classic) Rad-Therapy Half-Life Clean-room reimplementation of Half-Life and Half-Life Deathmatch written in QuakeC, running on the FTE engine. 🔥 0🧊 0 321

Engine Rewrite · DOS Omnispeak Commander Keen 4-6 Open-source reimplementation of Commander Keen episodes 4, 5 and 6, aiming to be a bug-for-bug clone of the originals. 🔥 0🧊 0 316

Engine Rewrite · PC (classic) reone Star Wars: Knights of the Old Republic I-II Free, clean-room game engine that runs Star Wars: Knights of the Old Republic and The Sith Lords for play and modding. 🔥 0🧊 0 315

Engine Rewrite · PC (classic) CroftEngine Tomb Raider (1) Open-source remake engine for the original Tomb Raider with native controller support, texture packs and online ghosts. 🔥 0🧊 0 310

Engine Rewrite · PC (classic) Abyss Engine Diablo II Clean-room Diablo II engine written in C, meant to be portable and easy to mod and extend. 🔥 0🧊 0 310

Engine Rewrite · PS1 OpenBiohazard2 Resident Evil 2 Open-source Resident Evil 2 engine reimplementation in Go and OpenGL, still missing audio, inventory and enemy AI. 🔥 0🧊 0 292

Engine Rewrite · PC (classic) BetterSpades Ace of Spades Lightweight Ace of Spades client that runs on very old systems down to OpenGL 1.1, free of Jagex code. 🔥 0🧊 0 285

Engine Rewrite · DOS PrinceJS Prince of Persia Work-in-progress browser reimplementation of Prince of Persia (1990) in HTML5 and JavaScript. 🔥 0🧊 0 282

Engine Rewrite · PC (classic) Sourcehold Stronghold Early-stage open-source engine reimplementation of Stronghold (2001); currently frozen pending the Definitive Edition. 🔥 0🧊 0 279

Engine Rewrite · PC (classic) DGEngine Diablo Engine that runs Diablo 1 and Hellfire from their game files, with support for Diablo Flare, Diablo Extended and a Diablo 2 demo setup. 🔥 0🧊 0 270

Engine Rewrite · DOS CivOne Civilization Open-source implementation of Sid Meier's Civilization; the README has no further details. 🔥 0🧊 0 262

Engine Rewrite · PC (classic) Syndicate Wars Fan Expansion Syndicate Wars Open-source port and fan expansion of Bullfrog's 1996 Syndicate Wars for modern systems, adding new resources. 🔥 0🧊 0 261

Engine Rewrite · PC (classic) freeaoe Age of Empires II Free engine in early development for Age of Empires II and other Genie games like Star Wars: Galactic Battlegrounds. 🔥 0🧊 0 241

Engine Rewrite · Wii Kinoko Mario Kart Wii (physics) C++ reimplementation of Mario Kart Wii's physics engine, aiming for perfectly accurate ghost replay. 🔥 0🧊 0 233

Engine Rewrite · PC (classic) Zero Hour Reforged Command & Conquer: Generals - Zero Hour Command & Conquer: Generals Zero Hour rebuilt from EA's published source as a 64-bit game with bug fixes and a smarter AI. 🔥 0🧊 0 222

Engine Rewrite · PC (classic) OpenAWE Alan Wake (engine) Open-source reimplementation of Remedy's Alan Wake engine (later Northlight), aiming to run Alan Wake and American Nightmare. 🔥 0🧊 0 220

Engine Rewrite · DOS raw(gl) Another World Archived reimplementation of the Another World engine using SDL and OpenGL, supporting many original versions. 🔥 0🧊 0 209

Engine Rewrite · PC (classic) Nanolathe Total Annihilation Independent Go-based 2.5D RTS engine with a clean-room reimplementation of Total Annihilation for skirmish, campaign and online play. 🔥 0🧊 0 196

Engine Rewrite · DOS SkyRoads Reverse Engineering SkyRoads Active reverse-engineering and native Rust port of DOS SkyRoads aiming for a deterministic, faithful reproduction. 🔥 0🧊 0 192

Engine Rewrite · PC (classic) sh3redux Silent Hill 3 Engine remake of Silent Hill 3 in OpenGL and C++; the README only covers build dependencies. 🔥 0🧊 0 187

Engine Rewrite · PC (classic) Crimsonland, rebuilt Crimsonland Faithful rewrite of Crimsonland (2003) as a Python/raylib reimplementation plus a matching decompilation playable in the browser. 🔥 0🧊 0 187

Engine Rewrite · PC (classic) Open Panzer Panzer General 2 HTML5 and JavaScript rewrite of Panzer General 2 that runs in modern browsers, including on Android and iOS. 🔥 0🧊 0 187

Engine Rewrite · PC (classic) Waddle Forever Club Penguin Playable single-player archive of Club Penguin, bundling a local server emulator and an Electron client that runs the game without Flash. 🔥 0🧊 0 184

Engine Rewrite · PC (classic) D2MOO Diablo II Reimplementation of Diablo II (Method and Ordinal Overhaul) with patching tools to help modders understand and change the game. 🔥 0🧊 0 181

Engine Rewrite · PC (classic) Forsaken Forsaken Community port of the Forsaken game engine to modern systems. 🔥 0🧊 0 180

Engine Rewrite · PC (classic) Vault13 Fallout 2 Work-in-progress Rust reimplementation of the Fallout 2 engine; not yet playable but with a demo mode and nightly builds. 🔥 0🧊 0 179

Engine Rewrite · DOS PanzerChasm Chasm: The Rift PanzerChasm, a free engine recreation of Chasm: The Rift that runs on SDL2 and OpenGL using the original game data. 🔥 0🧊 0 179

Engine Rewrite · NES z2rs Zelda II: The Adventure of Link Clean-room Rust reconstruction of Zelda II: The Adventure of Link for desktop, browser and Android, with widescreen, co-op and a randomizer. 🔥 0🧊 0 176

Engine Rewrite · DOS Chronoshift Command & Conquer: Red Alert Open source C++ re-implementation of Command & Conquer: Red Alert, rebuilt bottom-up and still relying on the original binary for unfinished parts. 🔥 0🧊 0 175

Engine Rewrite · DOS Freeserf.net The Settlers (Serf City) C# remake of The Settlers I (Serf City) for Windows, Linux, macOS and Android, using your original DOS or Amiga data files. 🔥 0🧊 0 173

Engine Rewrite · PC (classic) OpenHoW Hogs of War Archived open-source reimplementation of Hogs of War, aiming for a free engine that reads PC game data; early and unfinished. 🔥 0🧊 0 170

Engine Rewrite · DOS OUO (Ultima Online Server) Ultima Reverse engineering of the Ultima Online server from the Second Age demo, rebuilt as portable C99 that accepts clients up to 5.0.9.1. 🔥 0🧊 0 170

Engine Rewrite · PC (classic) UAlbion Albion Remake of the 1995 RPG Albion in .NET, rendering 2D and 3D maps and handling dialogue and inventory; combat and magic are not done yet. 🔥 0🧊 0 168

Engine Rewrite · PC (classic) Arcanum Community Edition Arcanum Beta community edition of Arcanum for modern systems, a drop-in replacement for arcanum.exe on Windows, Linux and macOS. 🔥 0🧊 0 167

Engine Rewrite · DOS Nuvie Ultima VI Open source engine for Ultima VI, Martian Dreams and The Savage Empire that reads the original data; development has moved to ScummVM. 🔥 0🧊 0 164

Engine Rewrite · PC (classic) OpenTPW Theme Park World Open-source re-implementation of Bullfrog's Sim Theme Park / Theme Park World (1999); very early and not yet playable. 🔥 0🧊 0 160

Engine Rewrite · PC (classic) OpenNefia Elona Open-source, moddable engine reimplementation of the Japanese roguelike Elona, built on .NET 8; still a work in progress. 🔥 0🧊 0 156

Engine Rewrite · NES Mario.js Super Mario Bros. JavaScript clone of Super Mario Bros. for the browser, with a hand-built HTML5 Canvas engine; a demonstration project. 🔥 0🧊 0 154

Engine Rewrite · PC (classic) CPyMO PyMO visual novel engine C reimplementation of the PyMO visual novel engine that runs PyMO games on Windows, consoles, phones and the web using legally owned copies. 🔥 0🧊 0 153

Engine Rewrite · DOS War1 Warcraft: Orcs & Humans Remake of Warcraft: Orcs & Humans written in C, using the original WAR assets and adding modern RTS features; still in development. 🔥 0🧊 0 153

Engine Rewrite · PC (classic) SMACX Thinker Mod Sid Meier's Alpha Centauri Engine-feature mod for Alpha Centauri: Alien Crossfire that adds rewritten AI, new options and rendering changes through an extra DLL. 🔥 0🧊 0 153

Engine Rewrite · PC (classic) OGS Engine GoldSrc engine (Half-Life) Clean-room GoldSource engine prototype built from id Tech 2 sources with no reverse-engineered code. 🔥 0🧊 0 152

Engine Rewrite · PC (classic) OpenXWA Star Wars: X-Wing Alliance Open-source reimplementation of Star Wars: X-Wing Alliance for Windows, macOS and Linux with classic and modern graphics modes. 🔥 0🧊 0 152

Engine Rewrite · PC (classic) hode (Heart of Darkness) Heart of Darkness Reimplementation of the Heart of Darkness engine by Gregory Montoir, running the original Windows data files on modern systems. 🔥 0🧊 0 150

Engine Rewrite · PC (classic) KotOR.js Star Wars: Knights of the Old Republic TypeScript reimplementation of the Odyssey Engine behind KotOR I and II, running in the browser or Electron, with an early mod editor. 🔥 0🧊 0 149

Engine Rewrite · PC (classic) Homeworld SDL (Gardens of Kadesh) Homeworld SDL source port of Homeworld 1 for Linux, Windows, macOS and browsers, now continued as Gardens of Kadesh; this repository is a mirror. 🔥 0🧊 0 146

Engine Rewrite · PC (classic) DarkFO Fallout 2 Browser-based TypeScript reimplementation of the Fallout 2 engine that handles maps, NPC dialogue, bartering and some quests; archived and incomplete. 🔥 0🧊 0 145

Engine Rewrite · PC (classic) OutpostHD Outpost Open-source redesign of Sierra's 1994 city-building strategy game Outpost, in active development for Windows with Linux and macOS source builds. 🔥 0🧊 0 145

Engine Rewrite · PC (classic) OpenMB Mount & Blade Open-source C# engine for Taleworlds' Mount & Blade series built on Ogre3D, with mod support and a built-in editor. 🔥 0🧊 0 142

Engine Rewrite · PC (classic) nv-rs Fallout: New Vegas Experimental Rust and Bevy engine for Fallout: New Vegas that aims to play exactly like the original from your own game files. 🔥 0🧊 0 137

Engine Rewrite · PC (classic) Age of Empires Free Software Remake Age of Empires / Rise of Rome Cross-platform free software remake of Age of Empires and Rise of Rome that mimics the Genie engine; only basic multiplayer-style gameplay so far. 🔥 0🧊 0 131

Engine Rewrite · PC (classic) RustyVolley Blobby Volley 2 Rust rewrite of Blobby Volley 2 that compiles to a native app or to WebAssembly for the browser. 🔥 0🧊 0 130

Engine Rewrite · PC (classic) OpenKrush KKnD / KKnD2: Krossfire KKnD and KKnD2: Krossfire mod built on the OpenRA engine; the README covers the OpenRA SDK scripts. 🔥 0🧊 0 127

Engine Rewrite · PC (classic) OpenATDeluxe Airline Tycoon Deluxe Open-source remake of Airline Tycoon Deluxe built in Godot, planning Full HD and native Windows, Linux and macOS support; airport and player are implemented. 🔥 0🧊 0 126

Engine Rewrite · PC (classic) OpenSA Swarm Assault Remake of the 1999 RTS Swarm Assault on the OpenRA engine, with modern controls, multiplayer and a map editor. 🔥 0🧊 0 124

Engine Rewrite · PC (classic) OpenNefia (old prototype) Elona Archived alpha prototype of a moddable Lua and LÖVE reimplementation of the Japanese roguelike Elona. 🔥 0🧊 0 121

Engine Rewrite · PC (classic) siglus_rs SiglusEngine (visual novels) Unofficial Rust reimplementation of the SiglusEngine, RealLive, AVG32 and UK2 visual novel engines for research and porting. 🔥 0🧊 0 115

Engine Rewrite · DOS Dune2JS Dune II Reimplementation of Dune II: The Building of a Dynasty in HTML5 and JavaScript that plays in desktop and mobile browsers. 🔥 0🧊 0 112

Engine Rewrite · PC (classic) Gorc Star Wars: Jedi Knight - Dark Forces II Early-development engine recreation of Star Wars Jedi Knight: Dark Forces II, meant to replace the original executable on new platforms. 🔥 0🧊 0 110

Engine Rewrite · DOS 1oom Master of Orion Engine recreation of the 1993 DOS game Master of Orion that runs on modern computers; this fork is no longer in development. 🔥 0🧊 0 110

Engine Rewrite · Arcade CannonBall DX OutRun OutRun engine fork focused on racing wheels, multi-device input, force feedback, 21:9 ultrawide and arcade cabinets. 🔥 0🧊 0 110

Engine Rewrite · PC (classic) OpenXW Star Wars: X-Wing Open-source reimplementation of Star Wars: X-Wing for Windows, macOS and Linux, supporting both the 1994 and 1998 editions. 🔥 0🧊 0 109

Engine Rewrite · PC (classic) openmw-web The Elder Scrolls III: Morrowind OpenMW compiled to WebAssembly so Morrowind runs in a desktop browser, with an admin dashboard and experimental multiplayer. 🔥 0🧊 0 107

Engine Rewrite · PC (classic) TemplePlus Temple of Elemental Evil Hooks, extensions and fixes for The Temple of Elemental Evil that modernize the original game's engine. 🔥 0🧊 0 104

Engine Rewrite · PC (classic) DreeRally Death Rally Engine reimplementation of Death Rally that replaces the Windows executable, with OpenGL rendering, mods and locale options. 🔥 0🧊 0 101

Engine Rewrite · PS1 Sonic The Hedgehog XA Sonic XA (fangame) Open-source Sonic fangame and engine for the PlayStation 1 written in C with PSn00bSDK, tested on emulators and real hardware. 🔥 0🧊 0 101

Engine Rewrite · PC (classic) Open Annihilation Total Annihilation Open-source engine for playing Total Annihilation on modern macOS, Windows and Linux with your own game data; Total Annihilation: Kingdoms is on the roadmap. 🔥 0🧊 0 53

Engine Rewrite · PS1 ReChan Jackie Chan Stuntmaster Reverse engineering project reimplementing Jackie Chan Stuntmaster (PS1) for PC, with keyboard and mouse, HOR+ widescreen and higher resolution rendering. 🔥 0🧊 0 50

Engine Rewrite · PC (classic) OpenBattlefield2 Battlefield 2 Clean-room C++20 reimplementation of DICE's Refractor 2 engine, the engine behind Battlefield 2, that reads your own installed copy; a research project in progress. 🔥 0🧊 0 44

Engine Rewrite · Game Boy/GBC pokerecomp Pokémon Gen 1 and 2 Native Godot 4 reimplementation of the Game Boy Pokémon Gen 1 and 2 games, written from scratch in GDScript and playable on desktop, mobile and Switch homebrew. 🔥 0🧊 0 41

Engine Rewrite · PC (classic) OpenReliant StarLancer Open-source engine reimplementation of the space combat sim StarLancer, written in Zig on SDL3, with the full campaign playable on Windows, Linux and macOS. 🔥 0🧊 0 27

Engine Rewrite · PC (classic) SiegeFX Dungeon Siege Clean-room open-source reimplementation of Dungeon Siege (2002) in C# and .NET 10 for Windows and Linux, loading your original game data. 🔥 0🧊 0 26

Engine Rewrite · DOS SkyRoads Portable Port SkyRoads From-scratch reverse-engineered C11 and SDL2 port of the 1993 DOS space racer SkyRoads for macOS, Windows, Linux, web and iOS, faithful to the original physics. 🔥 0🧊 0 24

Engine Rewrite · PS2 piney_apples .hack (Infection–Quarantine) Work-in-progress Rust rewrite of the .hack PS2 engine that plays Infection, Mutation, Outbreak and Quarantine from your own discs. 🔥 0🧊 0 21

Engine Rewrite · PC (classic) uo-client Ultima Online From-scratch Ultima Online T2A client in C++17 built for bot automation, with a software renderer that recreates the 1997-era look. 🔥 0🧊 0 18

Engine Rewrite · PC (classic) OpenEmperor Emperor: Rise of the Middle Kingdom Early clean-room reimplementation of Emperor: Rise of the Middle Kingdom in C++20 and SDL3, starting on Apple Silicon macOS and needing original game data. 🔥 0🧊 0 15

Engine Rewrite · Xbox 360 nfs-mw Need for Speed: Most Wanted Rust rewrite of Need for Speed: Most Wanted (2005 PC) on the Bevy engine that reads all game data from your own install, with car and city viewers and free roam. 🔥 0🧊 0 12