Matching Decompilations — Sega (Game Decompilations & Reimplementations): open-source projects that exist because someone reverse engineered a closed product, sorted by GitHub stars.
Sonic 1 Disassembly
Sonic 2 Disassembly
Sonic and Knuckles Disassembly
Cleaned-up engine based on the Sonic 3 & Knuckles disassembly (Mega Drive)
Sonic 2 SMS Disassembly
Hivebrain 2022 disassembly of Sonic the Hedgehog (Mega Drive)
Reverse engineering of the unreleased Half-Life port for Sega Dreamcast
Split disassembly of Kid Chameleon (Mega Drive)
Knuckles' Chaotix Disassembly & Toolkit
Sonic Spinball Disassembly
Decompilation of Resident Evil – Code: Veronica (Dreamcast)
Decompilation of Neon Genesis Evangelion 64
Matching decompilation of Tokyo Bus Guide (Dreamcast, 1999)
Disassembly of Ristar (Mega Drive)
Sonic 3D Blast Disassembly
Reverse engineering and decompilation of Panzer Dragoon Saga (Sega Saturn)
Research disassembly of the released Sonic the Hedgehog prototype (Mega Drive)
Disassembly of Alex Kidd in Miracle World (Sega Master System)
Disassembly of Sonic Adventure (Dreamcast)
Disassembly of Sonic CD (Assembly)
Extended Sonic Clean Engine based on the Sonic 3 & Knuckles disassembly (Mega Drive)
Disassembly of the Simon Wai prototype of Sonic the Hedgehog 2 (Mega Drive)
Disassembly of Puyo Puyo (Mega Drive)
Disassembly of Sonic the Hedgehog 2 targeting ASM68K (Mega Drive)
Reassemblable source of QuackShot Starring Donald Duck (Mega Drive)
Split disassembly of the Sonic the Hedgehog prototype (Mega Drive)
Split disassembly of Sonic the Hedgehog (Game Gear)
Disassembly of ToeJam & Earl (Mega Drive)
Disassembly of Landstalker (Mega Drive)
Disassembly of the Sonic the Hedgehog 2 Nick Arcade prototype (Mega Drive)
Clean-room C decompilation of Virtua Fighter 2 v2.1 (Sega Saturn)
Disassembly of Dragon Crystal (Sega Master System)
Decompilation and modern reimplementation of Panzer Dragoon Saga (Sega Saturn)
Attempt to reverse engineer the disassembled ROM of NHL94 using the NHL Hockey source code
Split disassembly of the November 1993 Sonic 3 prototype (Mega Drive)
Partial disassembly of Puyo Puyo (Mega Drive) for translation
Byte-identical source reconstruction of Alien Soldier (Mega Drive)
Decompilation of Crazy Taxi (Sega Dreamcast)
Disassembly of Flicky on the Mega Drive.
Disassembly of the Sonic the Hedgehog 2 August 21st prototype (Mega Drive)
Decompilation of Sonic the Hedgehog (Mega Drive) from its disassembly into C++
Split disassembly of the December 2020 Sonic the Hedgehog prototype (Mega Drive)
Disassembly of Earthworm Jim (Sega Genesis)
Disassembly of Landstalker (Mega Drive, US)
Phantasy Star IV Disassembly
Disassembly of Dr. Robotnik's Mean Bean Machine (Mega Drive)
Disassembly of Dr. Robotnik's Mean Bean Machine (Mega Drive)
Disassembly of Lord of the Sword (Sega Master System)
Disassembly of Puyo Puyo Tsuu (Mega Drive)
Disassembly of Streets of Rage (Mega Drive)
Disassembly of Altered Beast (Sega Genesis)
Disassembly of Columns (Sega Master System)
Split disassembly of Sonic the Hedgehog 2 in the style of s1disasm (Mega Drive)
Disassembly of Sonic the Hedgehog (Sega Master System)
Clean-room C source of Virtua Fighter 3tb (Sega Dreamcast)
Disassembly of the Kraftwerk prototype of Dr. Robotnik's Mean Bean Machine (Mega Drive)
Byte-matching decompilation of Panzer Dragoon Saga (Sega Saturn)
Phantasy Star Disassembly
Disassembly of Satellite 7 (Sega)
Disassembly of Super Monaco GP (Mega Drive)
Decompilation of the bootleg Super Mario 2 1998 (Sega Mega Drive)
Byte-identical source reconstruction of Flicky (Mega Drive)
Byte-perfect disassembly of Pebble Beach Golf Links (Mega Drive)
Phantasy Star III Disassembly
Decompilation of Phantasy Star Online Ver. 2 (Sega Dreamcast)
Disassembly of Solomon's Key (Sega Master System)
Disassembly of the Sonic CD 0.02 prototype (Sega CD)
Disassembly of Super Columns (Game Gear)
Matching decompilation of ToeJam & Earl (Sega Genesis, 1991)
Decompilation of Virtua Tennis (Sega Dreamcast)
Complete disassembly of Alisia Dragoon (Mega Drive)
Disassembly of an August 21 Sonic 2 prototype (Mega Drive)
Bit-perfect disassembly of Beyond Oasis (Genesis, US)
Disassembly of Chao Adventure 2 (Dreamcast VMU)
Disassembly of Dragon Ball Z: Buyuu Retsuden (Sega Mega Drive)
Decompilation of Dragon's Dream (Sega Saturn)
Buildable partial disassembly of Knuckles' Chaotix (Sega 32X)
Matching decompilation of Marvel vs. Capcom 2 (Sega Dreamcast, NTSC-U)
Project to disassemble released Mega Drive games
ASM68K disassembly of the September 14, 1992 Sonic 2 prototype (Mega Drive)
Decompilation of Shinobi Legions (Sega Saturn)
Decompilation of Sonic Adventure (Sega Dreamcast)
Disassembly of Sonic the Hedgehog (Sega Master System)
Disassembly of Super Tennis (Sega Master System)
Disassembly of Toy Story (Sega Mega Drive)
Disassembly of Twin Cobra (Sega Genesis)
Decompilation and recompilation of Ultima IV (Sega Master System)
Disassembly of Wonder Boy in Monster World (Mega Drive)
Decompilation attempt of the leaked Sonic X-treme 718 build (Sega Saturn)
Matching decompilation of Boku Doraemon (Sega Dreamcast)
Reverse-engineered source of Data East's Sega Mega Drive sound driver
Disassembly of Golden Axe II for the Mega Drive
Disassembly of Guzzler (Sega SG-1000)
Byte-exact recompilation of Hang-On (Sega Master System)
Decompilation of Illbleed (Sega Dreamcast)
Disassembly of Sonic CD for the Sega Mega CD
Byte-exact recompilation of Spy vs Spy (Sega Master System)
Decompilation of Zombie Revenge (Sega Dreamcast)