Space Invaders (WonderSwan)

Space Invaders
Developer: Kan's Publisher: Sunsoft Platform: WonderSwan Released in JP: May 13, 1999 This game has debugging material.

It's Space Invaders; now in black and white instead of black and green.

Debug Menu

Download Space Invaders Debug Mode Patch File: SpaceInvaders_DebugMode.zip (204 B) (info)

The game has a debug mode and subsequent menu that can be accessed during gameplay in replace of pause. To enable debug mode, modify the word value at DS:00DA with the value 0x01. Alternatively, you may apply the IPS patch for a permanent solution in which it modifies the instruction at F:0A36 from mov word ptr ds:0DAh, 0 to mov word ptr ds:0DAh, 1.

DEBUG MODE
NO DEATH	OFF or ON
PLAYER TIME	00 to FF
PLAYER SPEED	00 to FF
BEAM TIME	00 to FF
BEAM SPEED	00 to FF
INVADER TIME	00 to FF
MISSLE TIME	00 to FF
MISSLE SPEED	00 to FF
UFO TIME	00 to FF
UFO SPEED	00 to FF