Links to engine reimplementations

Here are links to some projects which aim to re-implement classic games.

Note: Only projects which use the original data files should be listed here. Remake projects which don't need the original data files to run should be posted here.

Some of these projects appear to be abandoned, so it might be a good idea to post their findings here, so that they (hopefully) won't remain abandoned...

This list is categorized into various subsections, based on how far the development process is:

• Complete means the engine is feature-complete with respect to all (or almost all) the features that are present in the original engine. It does not necessarily mean that development is halted, new features might still get implemented.
• Playable means that the games for this engine are at least playable to some extent. Some (important) features might be missing, and it might not be possible to play the games very far, though.
• Implementing means that there are first bits of the game logic implemented, but no gameplay. There is, however, some sourcecode which does something (like showing some ingame graphics for example)
• Draft means that there is some documentation about the game engine's workings, but code is (almost) completely nonexistent.
• Unfinished and abandoned means projects that weren't finished and are currently abandoned.
• Uncategorized means a list of projects that nobody ordered in some proper subsections (existent or a new one if needed) and somebody needs to do it.

Please note that the differences between these classifications are sometimes very small, so no flamewars on which project goes where, please.

If adding a project to a list please put in the correct place alphabetically to help increase the readability.

Some nice articles about reverse-engineering some old games: Gawd's Miseum of Dissected Games

Here is a link to game engine recreations on Wikipedia, which may list some more projects. See also wikipedia's Source Port list.

Game	Engine	Implementation	Stage
Marathon 2: Durandal		Aleph One	Complete
Reimplementation of Marathon 2: Durandal engine, allowing all three games in the trilogy to be played on modern systems.
Doom/Heretic/Hexen/Strife	Doom Engine	Doom engine reimplementations.	Complete
Countless Doom and Doom Engine (Heretic/Hexen/Strife) game source ports at Wikipedia.
Ultima VII		Exult	Complete
Jagged Alliance 2		JA2: Stracciatella	Complete
Duke Nukem 3D	Build Engine	JFDuke3D	Complete
One of the many Duke Nukem 3D (Build Engine) ports after its source code was released.
Lord of the Rings		Lord of the Rings	Complete
Nicky Boum		Nicky Boum	Complete
Uses SDL and is available for GBA, too.
Transport Tycoon Deluxe		OpenTTD	Complete
Tyrian		OpenTyrian	Complete
Escape from Colditz		Colditz Escape!	Complete
Flashback		REminiscence	Complete
LucasArts games	SCUMM	ScummVM	Complete
classic LucasArts adventures and some others.
Ultima III		U3Project	Complete
Rick Dangerous		XRick	Complete
Rick Dangerous clone using the original data (not the original data files, however.)
Sierra game engine for SCI games.	SCI	FreeSCI	Playable
Syndicate		Freesynd	Playable
Very basic functionality, but playable.
Baldur's Gate, Icewind Dale, Planescape Torment	Infinity Engine	GemRB	Playable
Another World / Out of this world		New RAW	Playable
Ultima VI and Worlds of Ultima		Nuvie	Playable
Creatures		openc2e	Playable
Ultima 8 and Crusader - No Remorse/Regret.		Pentagram	Playable
Total Annihilation		Spring	Playable
Settlers/Settlers 2		Widelands	Playable
Can load some of the maps from S2 currently.
Ultima IV		xu4	Playable
Master of Orion 2		2ooM	Implementing
reverse - engineering project
Heroes of Might and Magic 2		fheroes2	Implementing
Can load maps and most sprites currently.
Fallout		FIFEngine	Implementing
Command & Conquer: Red Alert 1		freeRA / sf.net OpenRedAlert	Implementing
Kingdom O' Magic		KoM	Implementing
ScummVM-based implementation
Ultima Underworld 2		Labyrinth of Worlds	Implementing
Looking Glass, Thief		OpenDarkEngine	Implementing
Grand Theft Auto 1		OpenGTA	Implementing
Final Fantasy VII		Q-Gears	Implementing
Final Fantasy VII engine reimplementation project (thread in the ScummVM forum here), using the fine Gears.pdf document. Also see the QhimmWiki, which documents various Final Fantasy game engines
Grim Fandango	GrimE	Residual	Implementing
StarCraft in C#		SCSharp / SVN	Implementing
They seem to have trouble with their homepage, but SVN should be good.
Elder Scrolls III: Morrowind		OpenMW	Implementing
Can currently load and display cells, but has no gameplay elements yet.
Elder Scrolls III: Morrowind		The Crystal Scrolls	Implementing
Elder Scrolls II: Daggerfall		DaggerXL	Implementing
Active.
Star Wars: Dark Forces		DarkXL	Implementing
Active.
FreeDSA		FreeDSA Wiki	Draft
Engine for the "Nordland-Trilogie"
Xenogears		Inside Xenogears	Draft
Attempt to document and reimplement Xenogears engine.
Ascendancy		Starlane-empire	Draft
Attempt to reimplement the old dos game Ascendancy (reverse engineering finished).
Star Wars: Galaxies		SWGEmu	Draft
Attempt to analyze and document the Star Wars: Galaxies network protocol, and eventually implement an open-source SW:G server.
Albion2		Albion2 Engine	Abandoned
Last update seems to be from the end of 2006.
Amberworld/Amberstar/Albion/Dragonflight		Amberworld	Abandoned
An unfinished effort to produce an interpreter for the Amiga classic Ambermoon and games with a similar engine like Dragonflight, Amberstar and Albion.
The Clue!		Clou! Open Source Project	Abandoned
Open Source project for providing a multiplatform version of "The Clue!" game. The original game was released as Open Source in 2000. The original company, Neo Software, was bought by Take-Two Interactive and later became a Rockstar Games subsidiary, Rockstar Vienna, before finally being closed in May 11, 2006. Information on their classic games (including the source code of The Clue!) was deleted from its site.
Alone in the Dark		Free In The Dark	Abandoned
reverse engineering by yaz0r.
Igor: Objective Uikokahonia	Igor engine	Igor: Objective Uikokahonia	Abandoned
This engine is in the process of becoming part of ScummVM.
System Shock		TSSHP	Abandoned
Ultima Underworld 1		Underworld Adventures	Abandoned
Abandoned in a quite early state.
ELF Corporation games		Anise	Uncategorized
Studio Air visual novels		angelladder	Uncategorized
Commander Keen 1-3		CloneKeen	Uncategorized
Curse of Enchantia		ScummVM forums	Uncategorized
some reverse-engineering going on in the ScummVM forum.
Descent		D1X and D2X	Uncategorized
Dune 1		Dune Revival / forum	Uncategorized
possibly abandoned
Dune 2		Dune Legacy	Uncategorized
Duke Nukem 3D		EDuke32	Uncategorized
A fork of the JFDuke3D port of Duke Nukem 3D (aka Duke3D), merged with EDuke to provide many new features for mod authors.
Command & Conquer		FreeCNC	Uncategorized
Prince of Persia		FreePrince	Uncategorized
Tools are available in addition
Infocom adventures	Z-Machine	Frotz / ZIP / JZIP / Zip 2000 / Zip Infinity / Nitfol	Uncategorized
Various engines for running Infocom's Z-machine text adventure games (This entry needs a link too. Better yet split into separate project entries with correct links.)
Heart of The Alien.		Heart of The Alien Redux	Uncategorized
Frontier First Encounters		jjFFE
Mega lo Mania		Gigalomania	Uncategorized
Magnetic Scrolls adventures.	Magnetic Scrolls	Magnetic	Uncategorized
Crescendo		Nekoze	Uncategorized
Engine for running numerous bishoujo games created by D.O., ZyX, CD BROS, Purple, Will, and ilex. For example, Crescendo.
Ultima II		Native Ultima II	Uncategorized
(no source code available?)
Another World		NewRAW	Uncategorized
Jazz Jackrabbit		OpenJazz	Uncategorized
Dungeon Master, Chaos Strikes Back, and Dungeon Master II		Return to Chaos	Uncategorized
Made by George Gilbert
Dark Forces II		Sith	Uncategorized
Eye of the Beholder II		Spectalum	Uncategorized
see also here for a viewer/unpacker for Westwood's .CPS files.
Mickey's Space Adventure, Winnie the Pooh	Pre-AGI	TrollVM	Uncategorized
Absorbed by ScummVM
Little Big Adventure		TwinE	Uncategorized
reverse engineering by yaz0r.
X-COM: UFO Defence		UFO2000	Uncategorized
Ren'ai games		Waffle / Kurokoge	Uncategorized
for running Key's ren'ai games on MacOS 9 and MacOS X (English patches).
Betrayal at Krondor		xBaK	Uncategorized
Various RealLive/AVG32 Games by Key/VisualArt's, such as Air, Kanon, Clannad and some others		rlvm (see also xclannad and xkanon for older, unmaintained projects, and here and here for english patches)	Uncategorized
Various visual novel games		xlvns	Uncategorized
(Leaf Visual Novel System for X) - A engine visual novel games made by Leaf/ based on source code of ToHeart2, due to the use of GPL code by Xvid. Current page down, mirror of the source code here. Defunct project.
eroge games	AliceSoft System 3.5/3.6/3.8/3.9	xsys35	Uncategorized
Alicesoft was a japanese published of mostly eroge games, mostly of RPG genre.