Overdump Data
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There are games that contain overdump data from builds of other games. This is caused by development cartridges being reused, and leftover data from the previous game remaining. Overdumps are also sometimes known as "slack data".
Nintendo 64
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| Controller Pak Test Program v5.4 (Prototype) | WWF Attitude | Todo | |
| F-Zero X (Prototype) | Legend of Zelda: Ocarina of Time | 0x1000000 | SpaceWorld 1997 demo |
| Mario Party 3 (Prototype) | Conker's Bad Fur Day | 0x2000000 | Matches Oct 25, 2000 build |
| The Legend of Zelda: Ocarina of Time (Feb 21, 2003 Debug) | Conker's Bad Fur Day | Todo | Final PAL build |
| The Legend of Zelda: Majora's Mask (Sep 29, 2000 Debug) | The Legend of Zelda: Ocarina of Time | 0x02100000 | Some leftover data towards the end of the ROM |
| Hercules: The Legendary Journeys (October 8, 1999 Prototype) | Ridge Racer 64 | 0x10E0000 | Final PAL build |
| WipEout 64 (Prototype) | Chameleon Twist | 0x800000 | Prototype build |
| Tommy Thunder | Robotron | 0x3DA4C0 | |
| Blues Brothers (#20) | Roadsters | 0x1000000 | |
| Blues Brothers (#53) | Roadsters | 0x1000000 | |
| Controller Kensa-ki NUS-yo N Cassette | Unknown game or demo | 0x2000000 | |
| Rugrats - Scavengers | Scooby-Doo! - Classic Creep Capers | 0xE00000 | |
| Taz Express | Daffy Duck Starring as Duck Dodgers, PGA European Tour | 0xC00000, 0x1000000 | Uncommon scenario having multiple overdumps. |
| Tony Hawk's Pro Skater 2 (v012) (2001-06-04) | Spider-Man 64 | 0x1000000 | Matches final. |
| THQ-Eurocom N64 Test Cartridge (prototype) | Duke Nukem: Zero Hour | 0x800000 | Significant differences from final. Early textures. |
Nintendo 64DD
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| Super Mario 64DD - SpaceWorld 1996 | Previous writes of SM64 | 0x15AB90, 0x166010, probably more | Technically an underdump (previously-written data that begins before current build on disk). Several duplicate compressed MIO0 blocks, seems to match final. Second MIO0 block is partially overwritten. |
Super Nintendo
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| Havoc (USA) (Demo) | Super Mario World | 0x3F000 | Matches final |
| Super Donkey (Japan) (Proto 1) | Legend of Zelda - Link to the Past | 0x98000 | Possibly from a prototype build of Zelda LTTP |
| Super Donkey (Japan) (Proto 2) | Legend of Zelda - Link to the Past | 0x98000 | Matches Japanese final |
| Teenage Mutant Ninja Turtles - Tournament Fighters (proto) | Super Mario World | 0x3165C, 0x3F74B, 0x4E366, 0x4F477,many more | Many chunks of data from Super Mario World. Not sure if any are different from final. It's as if chunks of TMNT were written over SMW. |
Game Boy
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| Splitz (Altered build) | Populous | Todo | 64 kb leftover |
Game Boy Advance
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| SEGA Rally Championship (Prototype) | Sonic Advance 2 | Todo | Contains half of an unknown build. |
Nintendo DS
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| Robogear 3D Tactics (prototype) | Pirates of the Caribbean: At World's End | Todo |
Sega Mega Drive
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| Yu Yu Hakusho: Makyou Toitsusen (June prototype) | Sonic Crackers, J. League Pro Striker 2, Streets of Rage 3 | Todo (many) | |
| Sonic the Hedgehog 2 (Nick Arcade prototype) | Sonic the Hedgehog, ToeJam&Earl | 0xE0180, 0xE1670 | Both overdump contents seem to match final |
Game Gear
| Game | Overdump Data | Starting offset(s) | Notes |
|---|---|---|---|
| Frogger (prototype) | Streets of Rage | Todo | Matches final? |