It was once meant to appear in Scrap Brain Zone, according to concept art and source code remnants showing its VRAM position. No code for Splats exists in the final game, but it does exist in the prototype, where it can be placed in Marble Zone using debug mode. Splats the Bunny, a badnik that seems to have been cut relatively late in development, as both a trading card and a figurine for it were released. Once enabled, they behave in the same manner as they do when running on non-Japanese systems.

C, C, C, C, Up, Down, Down, Down, Left, Right, hold A and press Start.

C, C, Up, Down, Down, Down, Left, Right.

As usual, they are entered on the title screen and can be combined by interpolating a D-Pad direction between them.

Here, there are separate codes for the pause options and the rest of the debug features.

Pause Options: press A to go back to the title screen, hold B to enable slow motion, or press C to enable frame advance.

Hold A and press C to move backward one object.

Placement Mode: Press B during gameplay.

To activate Level Select and Debug Mode, simply enter the Level Select code, push any direction on the D-Pad after the ring sound, then enter the Debug Mode code.įrom here, you have access to a variety of things: The 'Pause Options' (see below) are enabled even if A hasn't been held. After entering the code, press Start while holding A and continue holding A until Sonic appears in the level. The main requirement for the code is pressing C twice before the final input of Right. While Up, C, Down, C, Left, C, Right, C is the most common version, a shorter version is C, C, Up, Down, Left, Right. International Version & Japanese Version on International HardwareĪnother well-known code.

3.2 Japanese Version on a Japanese systemĪgain, codes for the debug mode vary based on console or game region.

3.1 International Version & Japanese Version on International Hardware.

Sonic 1 debug mode