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Sonic Jam (Sega Saturn)

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Title Screen

Sonic Jam

Developer: Sonic Team
Publishers: Sega (JP/US/EU), Tec Toy (BR)
Platform: Sega Saturn
Released in JP: June 20, 1997
Released in US: July 31, 1997
Released in EU: August 28, 1997
Released in BR: September 14, 1997

AnimationsIcon.png This game has unused animations.
AreasIcon.png This game has unused areas.
CopyrightIcon.png This game has hidden developer credits.
DevTextIcon.png This game has hidden development-related text.
ModelsIcon.png This game has unused models.
MusicIcon.png This game has unused music.
SoundIcon.png This game has unused sounds.
BonusIcon.png This game has hidden bonus content.

ProtoIcon.png This game has a prototype article
PrereleaseIcon.png This game has a prerelease article
BugsIcon.png This game has a bugs page

So very stubbly.
This page is rather stubbly and could use some expansion.
Are you a bad enough dude to rescue this article?
To do:
  • Quite a few unused animations for Sonic in Sonic World, including some from Sonic 3D's special stages.
  • Sonic 2 mistakenly uses Sonic 1's invincibility theme, but the correct one is still on the disc (as a 3-part AIF file) and used in two-player mode.
  • Should probably make a Notes page for different file formats for easier access.
  • Most of Sonic World's model lighting palettes go unused.

Sonic Jam is a compilation of the four Genesis Sonic titles (Sonic 1, Sonic 2, Sonic 3, and Sonic & Knuckles) plus bonus content in the form of Sonic World (the precursor to Sonic Adventure) and a number of different gameplay options.


Read about prototype versions of this game that have been released or dumped.
Prototype Info
Read about prerelease information and/or media for this game.
Prerelease Info
Read about notable bugs and errors in this game.

Game Changes

To do:
Document changes in the other games.

Rather than being emulated, the code from the original games has been ported to the Saturn. Because of this, more substantial changes can be observed compared to other Sonic compilations. Notably, these versions of the games use CD audio.

Hidden Programmer Credit & Build Date

Present at 0x1844 in SELECT.BIN.

UDAGAWA HARUHISA 1997/01 56:67
(Source: Original TCRF research)

Unused Objects

The Sonic World engine has a number of unused objects, most of which are null. However, two of them still somewhat function and have models.



Object ID 0x2B is a monkey that walks in place. You can walk through it and he does nothing else. Probably meant to be in a tree.



Object ID 0x2C is a seagull that just sits in place. Probably meant to be in the sky. You can walk through it too.

(Source: evilhamwizard on Sonic Retro)

Unused Animations

Sonic World is actually based on an early prototype of Sonic Adventure! Sonic Team didn't want to waste the work they did when the game was moved from the Saturn to the Dreamcast, so they just put what they'd finished in Sonic Jam as a bonus for players. So it's no surprise that Sonic Jam's code contains unused animations reflecting the same animations used for Sonic in Sonic Adventure.

SonicJam Anim8 GIF.gif
Sonic's spring animation, but going diagonally instead of straight up. Matches up with the spring animation used in the Special Stages of the Saturn version of 3D Blast.

SonicJam Anim9 GIF.gif
Sonic rolling over, which leads into one of his falling animations. Was used to transition out of the previous animation in 3D Blast.

SonicJam Anim12 GIF.gif
An animation of what seems to be Sonic pushing something?

SonicJam Anim14 GIF.gif
Sonic pushing something to the side, maybe opening a door?

SonicJam Anim16 GIF.gif
Sonic picking something up from the ground.

SonicJam Anim17 GIF.gif
What seems to be Sonic pointing at something up ahead.

SonicJam Anim21 GIF.gif
A longer version of Sonic picking something from the ground, along with him examining it.

SonicJam Anim24 GIF.gif
Sonic looking slightly forward then moving back.

Unused Audio

A short, repetitive music loop. Might be an early version of the credits theme.

Either a honking sound or a door creaking.

An unused, overblown version of the ring sound, found in the sound tests for all four games.

An unused jingle, found in the BGM and SFX for Sonic World. Only accessible by hacking.


Isolated Sidewalk


Behind the waterfall of Sonic World is a piece of sidewalk that can be seen by fiddling with the camera. By jumping at the waterfall's invisible collision at a certain angle, you can clip out of bounds and walk on it, but why is it there...?

Hidden Desktop Images

These can be found by inserting the disc into a computer's CD-ROM drive and looking in the /Extra directory.