Fascinated with stuff related to free software, modularity/decentralization, gaming, pixel art, sci-fi, cooking, anti-car-dependency, hardcore techno and breakcore
I don’t think decompilation is the best way due to higher risks of git repo takedowns due to copyright violations. And the above mentioned “clean-room reverse engineered decompilations” contradicts itself since it’s either decompiled or clean room.
But that aside it can be somwhat useful for games with similar engines, but yes they are usually games with a quite active community. As soon as one of the games has a working port basing ports for other games on it is a lot easier than starting from scratch. This can affect not so important games using bigger engines.
examples:
ScummVM supports a lot of engines (90 something) and even more games (325) by now. With few engines (SCUMM, SCI) supporting a lot of games.
OpenRCT2 has its original/main focus on Rollercoaster Tycoon 2, but also (works on) supports Rollercoaster Tycoon.
Openage has its original/main focus on Age of Empires II, but also (works on) supports Age of Empires and Star Wars: Galactic Battlegrounds.
OpenRW has its original/main focus on Grand Theft Auto III, but also (works on) supports Vice City and San Andreas.
OpenMW has its original/main focus on The Elder Scrolls III: Morrowind , but also (works on) supports Oblivian and Skyrim.
FreeHL (based on doom) has its original/main focus on old Half Life and Half-Life: Deathmatch, but the author also works on various mods for it: Counter-Strike 1.5, Team Fortress Classic, Scientist Hunt, Gunman Chronicles, Poke646, They Hunger, Opposing Force.
OpenRA has its original/main focus on Command & Conquer: Red Alert, but also (works on) supports Command & Conquer: Tiberian Dawn, Dune 2000, Tiberian Sun and Red Alert 2.
Julius has its original/main focus on Caesar III, but also (works on) supports Pharaoh.
Xoreos has its original/main focus on Wars: Knights of the Old Republic, but also (works on) supports Neverwinter Nights, Neverwinter Nights 2, Star Wars: Knights of the Old Republic II, Jade Empire, Sonic Chronicles: The Dark Brotherhood, The Witcher, Dragon Age: Origins and Dragon Age II.
GemRB implements Infinity Engine and no idea if it ever was focuse on a single game, but they (works on) supports Baldur’s Gate 1, Planescape: Torment, Icewind Dale 1, Baldur’s Gate 2 and Icewind Dale 2.
I don’t think decompilation is the best way due to higher risks of git repo takedowns due to copyright violations. And the above mentioned “clean-room reverse engineered decompilations” contradicts itself since it’s either decompiled or clean room.
But that aside it can be somwhat useful for games with similar engines, but yes they are usually games with a quite active community. As soon as one of the games has a working port basing ports for other games on it is a lot easier than starting from scratch. This can affect not so important games using bigger engines.
examples: