Matching Decompilations — SNES / NES (Game Decompilations & Reimplementations): open-source projects that exist because someone reverse engineered a closed product, sorted by GitHub stars.
Fully documented reverse-engineered source code of Elite (NES)
Disassembly / decompilation of Battle City (NES disassembly)
A complete disassembly of The Legend of Zelda
Disassembly of Super Mario Bros 3
Decompilation of Contra (NES)
Source code recreation of EarthBound (SNES, 1994)
Super Mario World disassembly X (SNES)
Full disassembly of Yoshi's Island (SNES) version U 1.0
Super Metroid SNES disassembly
Decompilation of Star Fox (SNES)
Disassembly and remade build system for SNES game Super Bomberman
Disassembly of Final Fantasy (Assembly)
Disassembly of Tetris (NES)
Super Mario Bros. 2 (NES) disassembly
Disassembly and ROM info for Final Fantasy VI
NES Dragon Warrior software disassembly
Disassembly of Legend of Zelda
Disassembly of Donkey Kong Country 2 (SNES, 1995)
Rebuildable 6502 disassembly of Tecmo Super Bowl (NES)
Source code of Super Mario World from its SNES disassembly
Full disassembly of Mega Man 3 (NES)
Disassembly of Super Mario RPG (SNES)
Reverse engineering effort of the NES game Mike Tyson's Punch-Out.
Disassembly of Balloon Fight (NES, 1984)
Disassembly of Super Mario Bros. (NES)
Annotated disassembly of Zelda no Densetsu: Kamigami no Triforce (SNES, Japan)
Final Fantasy IV Disassembly
Disassembly of Fire Emblem: Thracia 776 (Super Famicom)
Full disassembly of Mega Man 5 (NES)
Metroid software disassembly
Disassembly of the Super Mario All-Stars SNES ROM
Reverse-engineered source code of Bomberman (NES)
Disassembly of Zelda II: The Adventure of Link (NES)
Disassembly of Donkey Kong Country (SNES, 1994)
Full disassembly of Mega Man 4 (NES)
Disassembly of Super Mario World and its All-Stars releases (SNES)
Disassembly / decompilation of Donkey Kong (NES)
Disassembly of Game Genie (NES)
Fully commented disassembly of Jackal (NES)
ca65 disassembly of Super Mario Bros. for the NES
Decompilation of Super C / Probotector (NES)
Disassembly of Shin Megami Tensei v1.0 (SNES)
Disassembly and ROM info for Final Fantasy III (NES)
Super Mario World disassembly SMWDisC (SNES)
Relocatable disassembly of Super Metroid (SNES)
Disassembly of the Satellaview BS-X BIOS cartridge (Super Famicom)
Disassembly / decompilation of Dr. Mario (NES)
Disassembly and ROM Info for Final Fantasy II (NES)
Disassembly and ROM info for Final Fantasy V
Disassembly of Super Mario Bros. (NES)
Disassembly of Donkey Kong Country 3 (SNES, 1996)
Disassembly of Final Fantasy (NES)
Ghosts and Graves, a Tents and Trees demake written in 6502 assembly (NES homebrew)
Disassembly of Hummer Team's unlicensed NES port of Super Mario World
Full disassembly of Mega Man 6 (NES)
Disassembly of Mother / EarthBound Beginnings (NES)
Disassembly of Donkey Kong Country 2 (Assembly)
Fully commented disassembly of Final Fantasy (NES)
Decompilation and disassembly of Harvest Moon (SNES)
Disassembly of Star Fox (SNES, US v1.2)
Disassembly of The Legend of Zelda: A Link to the Past (SNES)
ca65 version of doppelgangers fantastic smb2j disassembly
Disassembly of Super Ghouls 'n Ghosts (SNES)
Disassembly of Super Mario World 2: Yoshi's Island (SNES)
Disassembly of Tengen Tetris (NES, 1989)
Disassembly of Donald Land (NES, 1988)
Disassembly of Fushigi no Dungeon 2: Fuurai no Shiren
Disassembly of Fire Emblem: Ankoku Ryu to Hikari no Tsurugi (Famicom)
Disassembly of the NES Game Crystalis
Captain Tsubasa 2 [NES] disassembly
Compilable disassembly of Mega Man / Rockman (NES)
Disassembly of Mega Man 7 (SNES)
Disassembly of Metroid (NES)
Disassembly of Super Mario Kart (SNES)
Disassembly of Dr. Mario (NES)
Disassembly of EarthBound (SNES)
Disassembly of Kirby Super Star (SNES)
Disassembly of Super Mario World 2: Yoshi's Island (SNES)
Disassembly of BS Zelda no Densetsu (Satellaview)
Disassembly of International Superstar Soccer Deluxe (SNES)
Reverse-engineered disassembly of Milon's Secret Castle (NES)
Disassembly of Battle City (NES, 1985)
Disassembly of Goof Troop (SNES)
Disassembly of Jurassic Park (SNES)
Disassembly of the Star Fox SPC sound driver (SNES)
Disassembly of Final Fantasy II (Famicom)
Disassembly of Mario Paint (SNES)
Disassembly of Mega Man X (SNES)
Disassembly of Atlantis no Nazo (Famicom, Sunsoft)
Ghidra decompilation of EarthBound Beginnings / Mother (NES, 1989)
Disassembly of Earthworm Jim 2 (SNES)
Disassembly of The Legend of Zelda: A Link to the Past (SNES, US)
Decompilation of the unlicensed Waixing BioHazard for NES
Disassembly of Arcana (SNES)
Disassembly and information for Final Fantasy: Mystic Quest (SNES)
Disassembly of Hong Kong 97 (SNES)
Disassembly of Kirby's Dream Land 3 (Assembly)
Disassembly of the nes version of Ultima Exodus
Disassembly of the unlicensed Street Fighter III (9 Fighter) for NES
Disassembly of Wario's Woods (SNES)
Disassembly projects of commercial SNES and NES games made with DiztinGUIsh
Disassembly of Mega Man 2 (NES)
Disassembly of Mega Man (NES)
Disassembly of Mega Man 4
A disassembly of Ms. Pac-Man for NES, Tengen version.
Disassembly of Plok (SNES)
Disassembly of SimCity (Assembly)
Disassembly of TMNT IV: Turtles in Time (SNES)
Rebuildable disassembly of the unreleased SNES version of Puggsy
65816 disassembly of Chrono Trigger (SNES)
Disassembly of Contra (NES, Japan)
Disassembly of Donkey Kong Country 3 (SNES)
Disassembly of Faceball 2000 (SNES)
Disassembly of Mighty Bomb Jack (NES)
Disassembly of Ms. Pac-Man (Assembly)
Disassembly of Super Punch-Out!! (SNES)
Disassembly of Castlevania III: Dracula's Curse (NES)
Disassembly and asset extraction for Dragon Warrior IV (NES, US)
Disassembly of Godzilla: Monster of Monsters (NES)
Disassembly of Kirby's Adventure (NES)
Complete disassembly of Legacy of the Wizard (NES)
Annotated ca65 disassembly of Mega Man 2 (NES)
Disassembly of Pac-Man 2: The New Adventures (SNES)
Disassembly of Pocky & Rocky 2 (SNES, USA)
Disassembly of Speedy Gonzales: Los Gatos Bandidos (Assembly)
Byte-exact decompilation of Stunt Race FX (SNES)
Source recreation of Transformers: Mystery of Convoy (Famicom)
A disassembly of Duck Hunt for the NES.
Partial disassembly of Fire Emblem: Genealogy of the Holy War (Super Famicom)
Disassembly of Fire Emblem: Mystery of the Emblem (Super Famicom)
Disassembly of Ganbare Goemon 3 (Super Famicom, Konami, 1994)
Disassembly of J.R.R. Tolkien's The Lord of the Rings: Volume 1 (SNES)
Disassembly of Mega Man X3 (SNES)
Disassembly of Monster in My Pocket (NES)
A disassembly of Ms. Pac-Man for NES, Namco/Now Production version.
Disassembly of Rise of the Robots (SNES)
Disassemblies of SNES games including Demon's Crest
Disassembly of Super Mario All-Stars (SNES)
Disassembly of Super Mario Bros. All Night Nippon (Famicom Disk System)
Decompilation of Zanac (Famicom)
Disassembly of Blaster Master (NES, US)
Disassembly of Bubble Bobble Part 2 (NES, US and JP)
Reverse engineering and disassembly of Donkey Kong Country (SNES)
Disassembly of Final Fantasy (NES)
Disassembly of Fire Emblem Gaiden (Famicom)
Disassembly of Frogger (SNES)
Decompiled source of Harvest Moon (SNES, US)
Disassembly of the Japanese Gimmick! (Famicom)
Disassembly of Legacy of the Wizard (NES)
Disassembly of Mega Man 3 (NES)
Annotated ca65 disassembly of Mega Man 3 (NES)
Disassembly of Mega Man 5 (NES)
Byte-identical ca65 source reconstruction of Solomon's Key (NES, US and Europe)
Disassembly of Spider-Man and the X-Men in Arcade's Revenge (Assembly)
My attempt to develop every single console i can
Complete disassembly of The Goonies (Famicom, Konami 1986)
Disassembly of Williams Arcade's Greatest Hits (SNES)
Disassembly of Breath of Fire (SNES)
Disassembly of Bucky O'Hare (NES)
Byte-identical source reconstruction of Castle Excellent and Castlequest (Famicom/NES)
Byte-identical ca65 source reconstruction of Doraemon (Famicom)
C reconstruction and native port research for Dragon Ball Z: Super Saiya Densetsu (Super Famicom)
Disassembly of Dragon Warrior II (NES)
Disassembly of Dragon Warrior IV (NES)
Disassembly of Duck Hunt (NES, 1984)
Disassembly of Family Feud (NES)
Disassembly of the Japanese Super Mario Bros. (Famicom)
Disassembly of Kirby Super Star (SNES)
Disassembly of Kirby's Adventure (NES, USA)
Disassembly of Lester the Unlikely (SNES)
Disassembly of Lufia II: Rise of the Sinistrals (SNES)
Disassembly of Mega Man 4 (NES)
Annotated ca65 disassembly of Mega Man 4 (NES)
Disassembly of Mega Man 6 (NES)
Annotated ca65 disassembly of Mega Man (NES)
Annotated disassembly of Milon's Secret Castle (NES)
Disassembly of Ninja Gaiden (NES)
Disassembly of Ninja Gaiden II (NES)
Disassembly of Pinball (NES)
Disassembly of Pocky & Rocky (SNES)
Disassembly of Pro Wrestling (NES)
Disassembly of Radia Senki: Reimeihen (NES)
Disassembly of Rare's unreleased Dream (SNES)
Byte-identical ca65 source reconstruction of seven Super Mario Bros. releases (NES)
Labelled ca65 disassembly of StarTropics (NES) that rebuilds the original ROM
Disassembly of Super Metroid (SNES)
Disassembly of Super Pitfall (NES, USA)
Disassembly of Thexder (NES/Famicom)
Disassembly of Willow (NES)
Disassembly of Ys (NES)
Disassembly of Ys II (NES)
Comprehensive disassembly of Yume Kojo: Doki Doki Panic (Famicom Disk System)
Comprehensive disassembly of Dragon Quest 1 for the Famicom
Disassembly of Dream: Land of Giants (unreleased SNES prototype, Rare, 1995)
Comprehensive disassembly of Donkey Kong for the Famicom
6502 disassembly of the Famicom Disk System boot ROM
Disassembly of Ganbare Goemon Kirakira Douchuu (Super Famicom, Konami, 1995)
Decompilation of Lufia II: Rise of the Sinistrals (SNES)
Byte-identical ca65 source reconstruction of seven Pac-Man NES revisions
Disassembly combining multiple 8-bit versions of Super Mario Bros.
Disassembly of Super Mario Bros. 3 for the Famicom/NES
Disassembly of Super Mario Bros. 2 (Famicom Disk System, Japan)
Disassembly of Ufouria: The Saga (NES)
Disassembly of Zelda II: The Adventure of Link