I couldn't remember the name of this game for years. The debugging stuff was an interesting find.
Source: http://gscentral.org/codelist.php?sys=44&dev=44&game=2149542
At the title screen, enter the following button sequence on controller 1 or 2:
B, Down, Down, Left, A, Right, Up, B, Right, Right, A, Right, Down, B, A, Down
A long fanfare will play if entered correctly. The effect of this cheat is unknown!
Stage Select, Debug Mode, etc.
At the title sceen, enter the following button sequences on controller 1 or 2 (controller 1 only recommended!):
B, Right, Right, Left, Y, Up, A, Up, Down, Down, Down, Left [Unknown]
Down, A, Y, B, Up, B, Down, Y [Stage select]
Down, Right, A, Down [Debug mode]
The music will restart after each sequence if entered correctly. These must be entered in the order shown, or they will now work. If you mess up or press any button on the other controller, you will have to restart from the first sequence!
[Unknown] does not seem to do anything special?
[Stage select] allows you to choose your stage and such by pressing buttons on controller 2 at the title screen (Note that using these before completing the third sequence will force you to re-enter all three if you want Debug Mode):
- Up: Increase starting stage by one. (Do not go beyond stage '21'. It will crash the game!)
- Down: Decrease starting stage by one. (Do not go below stage 1. It will crash the game!)
- Right: Increase starting stage by three. (Do not go beyond stage '21'. It will crash the game!)
- Left: Decrease starting stage by three. (Do not go below stage 1. It will crash the game!)
- B: Enable and disable "demo mode". (The computer will play the selected stage. Pressing any button while in demo mode will reset back to the title screen.)
- A: Unknown. (Constantly plays annoying sound effects in the selected stage. Using this button will not restart the music, like the others do.)
[Debug mode] allows you to do many different things while in a stage:
- Current Player:
-- Select+R: Enable and disable debug mode.
--- In debug mode:
---- D-Pad: Move around stage.
---- Hold Select: Pixel-precise movement + slows time.
---- Hold R: Tile-precise movement.
---- L: Delete objects.
---- A: Increase selected item by one.
---- Y: Decrease selected item by one.
---- X: Place selected item.
---- B: Unknown (reset select item?)
-- Select+L: Enable and disable sound test & VRAM viewer mode.
--- In sound test/VRAM viewer mode:
---- Up: Increase music track by one.
---- Down: Decrease music track by one.
---- Right: Increase sound effect by one.
---- Left: Decrease sound effect by one.
---- B or X: Play selected music track.
---- A or Y: Play selected sound effect.
- Controller 2 only:
-- A: Increase Bubsy's sprite spacing.
-- B: Decrease Bubsy's sprite spacing.
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