Sonic Gems Collection/Hidden content

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Lost Sonic CD JP Soundtrack

It is possible to restore the JP Soundtrack to Sonic the Hedgehog CD in the EU PlayStation 2 version of Sonic Gems Collection by editing the ISO in a hex editor.[1] Just open the ISO and search for BGM_US and scroll down to line 1353439A and replace the US with JP. After being saved, the game will run the Japanese soundtrack.

Removed games

Sgc eraser.png

By using an Action Replay on the GameCube version of Sonic Gems Collection, it is possible to show the title graphics and name of games that were removed from the final version of the compilation[2], though the game data itself is missing. Two of these cut games, Monster World IV and Sonic Eraser, use an orange-red "MD" icon, likely to denote that they were Japanese-only release games. To display these games, use the code 021CCD5B 0000XXXX, where XXXX is substituted for the following:

3030 ??? (used for game not yet unlocked)
3031 Sonic the Fighters (AG)
3032 Sonic CD (SCD)
3033 Sonic R (SS)
3034 Sonic the Hedgehog 2 (GG)
3035 Sonic Spinball (GG)
3036 Sonic Triple Trouble (GG)
3037 Sonic Drift 2 (GG)
3038 Tails' Sky Patrol (GG)
3039 Tails Adventures (GG)
3130 Vectorman (SG)
3131 Vectorman 2 (SG)
3132 Bonanza Bros. (MD)
3133 Streets of Rage (MD)
3134 Streets of Rage 2 (MD)
3135 Streets of Rage 3 (MD)
3136 Wonder Boy III: Monster Lair (MD)
3137 Wonder Boy in Monster World (MD)
3138 Monster World IV (MD*)
3139 Sonic Eraser (MD*)

Information about games from PS2 version

From Goodgen 3.21

Bare Knuckle III (J) [!].bin
Bonanza Bros. (JE) (REV01) [!].bin
Dong Gu Ri Te Chi Jak Jeon (K).bin
Sonic 3D Blast (UE) [!].bin
Sonic and Knuckles (W) [!].bin
Sonic Spinball (J) [!].bin
Sonic The Hedgehog (W) (REVXB).bin
Sonic The Hedgehog 2 (W) (REV01) [b8].bin
Sonic The Hedgehog 3 (J) [!].bin
Streets of Rage (W) (REV01) [!].bin
Vectorman (UE) [!].bin
Vectorman 2 (U) [!].bin

Only Bare Knuckle 2 is unknown.


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