The first of two licensed Sonic titles for LeapFrog systems (the second being Sonic the Hedgehog on the Didj), Sonic X is pretty much a reskin of fellow Leapster game Numbers on the Run: Counting on Zero. Sonic X itself would later be reskinned as Go Diego Go!: Animal Rescuer.
This is one of those games that not even the Sonic Twitter (X) page will dare to mention.
You're too good, Sonic.
| To do:
A lot.
- Figure out how the music and voice clips are stored and see if there are any unused music and voice clips.
- Figure out how the level maps are stored and see if there are any unused level maps.
- Figure out where the sprite mappings are and how they work.
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Unused Graphics
| To do:
- Rip the rest of the sprites. (The graphics are stored in 4BPP GBA format. The graphics start at 0x117074 and the palettes start at 0x114B0C.)
- There's likely more unused graphics than just the leftover sprites.
- Find out where the mapping data for the game's sprites are located.
- When said mapping data is found, re-rip the sprite of Zero shown below.
|
Scattered throughout the ROM is a metric ton of leftover graphics from Counting on Zero. Which is somewhat of a given considering the fact that this game is a reskin of it.
Placeholder Credits
22.swf is an unused and very unfinished credits sequence, using placeholder text rather than actual credits. The font is in Arial, since the font wasn’t set to one of the custom fonts in the game itself.
Unused Debug Mode
Create an account with the name .SONSTER.
- B + Up - Free fly/noclip mode.
- Hint (the "?" button) - Stop flying/enable collision.
- B + Left - Display coordinates on bottom-right side of screen.
- B + Down - Access the cheat menu/hidden level select.
Notably, you can play as Zero via Debug Mode, though the sprites are a bit buggy.
Another Counting on Zero leftover, though it still works.
Unused Levels
What looks to be a test level using graphics from Counting on Zero's Outlandish Outer Spacy Zone. Unfortunately, the camera does not move.
Seemingly another test level, with this one using graphics from Angel Island.
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| Sega Genesis | Sonic the Hedgehog (Prototype) • Sonic the Hedgehog 2 (Prototypes) • Sonic the Hedgehog 3 (Prototype) • Sonic & Knuckles (Prototypes) • Sonic 3 & Knuckles • Sonic 3D Blast (Prototypes) |
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| Sega Master System | Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic Chaos (Prototypes) • Sonic Blast |
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| Game Gear | Sonic the Hedgehog (Prototype) • Sonic the Hedgehog 2 (Prototype) • Sonic Chaos (Prototypes) • Sonic Triple Trouble (Prototypes) • Sonic Labyrinth • Sonic Blast (Prototypes) |
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| Arcade | SegaSonic the Hedgehog (Prototype) |
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| Sega CD | Sonic the Hedgehog CD (Prototypes) |
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| 32X | Knuckles' Chaotix (Prototypes) |
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| Windows | Sonic the Hedgehog CD (1996) • Sonic 3D Blast • Sonic Heroes (Prototypes) • Sonic Adventure DX: Director's Cut (2004) (Demo) • Sonic the Hedgehog 4: Episode I • Sonic the Hedgehog CD (2011) • Sonic Adventure DX: Director's Cut (2011) • Sonic Generations (Demos) • Sonic the Hedgehog 4: Episode II (Prototype) • Sonic Adventure 2 • Sonic Lost World • Sonic Mania • Sonic Forces • Sonic Colors: Ultimate • Sonic Frontiers • Sonic Superstars • Sonic X Shadow Generations |
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| Sega Saturn | Sonic X-treme • Sonic 3D Blast (Prototype) |
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| Dreamcast | Sonic Adventure (Prototypes) • Sonic Adventure 2 (Prototypes) |
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| Neo Geo Pocket Color | Sonic the Hedgehog Pocket Adventure (Prototypes) |
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| GameCube | Sonic Adventure 2: Battle (Demo) • Sonic Adventure DX: Director's Cut (Prototypes) • Sonic Heroes (Prototypes) • Shadow the Hedgehog |
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| Game Boy Advance | Sonic Advance (Prototype) • Sonic Advance 2 (Prototype) • Sonic Advance 3 (Prototype) • Sonic the Hedgehog Genesis |
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| PlayStation 2 | Sonic Heroes (Prototypes) • Shadow the Hedgehog • Sonic Unleashed |
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| Xbox | Sonic Heroes (Prototypes) • Shadow the Hedgehog |
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| DoJa, J2ME, BREW | Sonic the Hedgehog • Sonic the Hedgehog 2 |
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| N-Gage | Sonic N |
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| Nintendo DS | Sonic Rush (Demo) • Sonic Rush Adventure • Sonic Colors (Demo) |
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| Xbox 360 | Sonic the Hedgehog (Prototypes) • Sonic Unleashed (Prototypes) • Sonic Adventure DX: Director's Cut (Prototypes) • Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic Generations (Demos) • Sonic the Hedgehog CD (2011) (Demo) • Sonic the Hedgehog 4: Episode II • Sonic Adventure 2 |
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| Wii | Sonic Unleashed • Sonic Colors • Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic and the Secret Rings • Sonic and the Black Knight |
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| PlayStation 3 | Sonic the Hedgehog • Sonic Unleashed • Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic Generations (Demos) • Sonic the Hedgehog CD (2011) (Demo) • Sonic the Hedgehog 4: Episode II • Sonic Adventure 2 |
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| Nintendo 3DS | Sonic Generations • Sonic Lost World |
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| Wii U | Sonic Lost World |
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| PlayStation 4, Xbox One, Nintendo Switch | Sonic Mania • Sonic Forces (Demo) • Sonic Colors: Ultimate • Sonic Frontiers • Sonic Superstars • Sonic X Shadow Generations |
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| Amazon Luna | Sonic Mania • Sonic Colors: Ultimate |
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| PlayStation 5, Xbox Series X | Sonic Frontiers • Sonic Superstars • Sonic X Shadow Generations |
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| iOS, Android, tvOS | Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic the Hedgehog 4: Episode II (Prototype) • Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic the Hedgehog CD (Demo) |
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| Ouya, NVIDIA Shield | Sonic the Hedgehog 4: Episode I (Prototypes) • Sonic the Hedgehog 4: Episode II (Prototype) • Sonic the Hedgehog CD (Demo) |
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| Racing Games |
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| Game Gear | Sonic Drift • Sonic Drift 2 |
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| Windows | Sonic R • Sonic Riders • Sonic & SEGA All-Stars Racing • Sonic & All-Stars Racing Transformed • Team Sonic Racing |
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| Sega Saturn | Sonic R (Preview) |
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| PlayStation 2 | Sonic Riders (Prototype) • Sonic Riders: Zero Gravity |
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| PlayStation 3, Wii U | Sonic & All-Stars Racing Transformed |
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| GameCube, Xbox | Sonic Riders |
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| Nintendo DS | Sonic & SEGA All-Stars Racing |
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| PlayStation Portable | Sonic Rivals • Sonic Rivals 2 |
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| Xbox 360 | Sonic & SEGA All-Stars Racing • Sonic & All-Stars Racing Transformed • Sonic Free Riders |
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| Wii | Sonic & SEGA All-Stars Racing • Sonic Riders: Zero Gravity |
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| Nintendo 3DS | Sonic & All-Stars Racing Transformed |
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| PlayStation 4, Xbox One, Nintendo Switch, Amazon Luna | Team Sonic Racing |
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| Adobe Flash | Sonic Rivals Dash |
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| Sports/Fighting Games |
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| Sega Genesis | Sonic the Hedgehog Spinball (Prototypes) |
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| Sega Master System | Sonic Spinball |
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| Game Gear | Sonic Spinball (Prototypes) |
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| Arcade | Sonic Championship • Mario & Sonic at the Rio 2016 Olympic Games |
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| Game Boy Advance | Sonic Battle |
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| Nintendo DS | Mario & Sonic at the Olympic Games • Mario & Sonic at the Olympic Winter Games |
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| Xbox 360 | Sonic the Fighters |
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| Wii | Mario & Sonic at the Olympic Games • Mario & Sonic at the Olympic Winter Games • Mario & Sonic at the London 2012 Olympic Games |
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| Nintendo 3DS | Mario & Sonic at the London 2012 Olympic Games |
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| Wii U | Mario & Sonic at the Rio 2016 Olympic Games |
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| J2ME | Sonic the Hedgehog Golf • Sonic at the Olympic Games • Sonic Spinball |
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| BREW | Sonic at the Olympic Games • Sonic Spinball |
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| Puzzle Games |
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| Sega Genesis | Sonic Eraser • Dr. Robotnik's Mean Bean Machine (Prototypes) |
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| Sega Master System, Game Gear | Dr. Robotnik's Mean Bean Machine |
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| Arcade | SegaSonic Bros. |
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| Adobe Flash | Sonic Jigsaw 2 |
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| Educational |
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| Sega Master System | Sonic's Edusoft |
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| Windows | Sonic's Schoolhouse |
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| Sega Pico | Sonic the Hedgehog's Gameworld (Prototypes) • Tails and the Music Maker (Prototypes) |
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| Leapster | Sonic X |
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| LeapFrog Didj | Sonic the Hedgehog |
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| Sonic Boom |
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| Wii U | Rise of Lyric (Prototype) |
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| Nintendo 3DS | Shattered Crystal • Fire & Ice |
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| Adobe Flash | Link 'n Smash |
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| Compilations |
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| Sega Genesis | Sonic Classics |
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| Sega Saturn | Sonic Jam (Demo) |
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| Windows | Sonic & Knuckles Collection • Sonic Mega Collection Plus • Sonic Origins |
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| GameCube | Sonic Mega Collection (Prototype) • Sonic Gems Collection |
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| PlayStation 2 | Sonic Mega Collection Plus • Sonic Gems Collection |
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| Xbox | Sonic Mega Collection Plus |
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| Nintendo DS | Sonic Classic Collection |
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| Xbox One/Series X, PlayStation 4/5, Nintendo Switch | Sonic Origins |
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| Game.com | Sonic Jam |
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| Plug & Play | Super Sonic Gold |
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| Other |
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| Game Gear | Tails' Skypatrol • Tails Adventures |
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| Arcade | SegaSonic Cosmo Fighter |
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| Sega Saturn | Sonic the Hedgehog into Dreams... |
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| Dreamcast | Sonic Shuffle (Debug Version) |
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| Nintendo DS | Sonic Chronicles: The Dark Brotherhood |
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| Windows, Mac OS X | The Murder of Sonic the Hedgehog |
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| J2ME | Sonic Jump (2005) • Sonic Jump (2007) |
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| iOS, Android | Sonic Jump • Sonic Dash • Sonic Runners • Sonic Runners Adventure (Prototype) |
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| Adobe Flash | Sonic the Broad Jump • Sonic and the Black Knight: Knight in Training |
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