Proto:Sonic Heroes/GameCube NPDP Prototypes

This is a sub-page of Proto:Sonic Heroes.

To do: Actually document the debug features and changes.

Two debug builds of Sonic Heroes were dumped on March 3, 2021 by MSX. Both of them seem to be older than the November 18, 2003 build, with an approximate date of October 30, 2003.

Sub-Page

Debug Content All the debug content in the final, and more!

NPDP

This build will not boot normally due to trying to reference a special USB. The below Gecko codes will cause the game to boot into the Debug Menu unused in the final, skipping the USB check:

04017338 60000000
04218a2c 4e800020
04218af4 4e800020
04219274 4e800020
042190dc 4e800020
04218e10 4e800020
04218f94 4e800020

To boot to the title screen instead, use the below code as well:

C2022C90 00000004
7C0C0378 2C050003
40820008 38A00001
7D806378 90A3FF78
60000000 00000000

General Differences

• In Story Mode, Egg Emperor is not played if resuming the story starting with Egg Fleet.
• A unique demo for Seaside Hill is present, although the fact it desyncs midway suggests its implementation was a mistake.
• A bug in Audio Menu causes track names to not render if hovering over a track that isn't unlocked.
• For whatever reason, starting Story Mode crashes the game if there are no stages completed. If any story segment is complete and you are picking the starting stage, Story works fine.
• Team Rose's stages appear to be the same length as in the final version. This is longer than the other NPDP build, which itself were shorter than in the 10.8 prototype.

(Source: Hidden Palace, Sewer56)