Gunpey (WonderSwan)

Gunpey
Developer: Koto Laboratory Publisher: Bandai Platform: WonderSwan Released in JP: March 4, 1999 This game has debugging material. This game has a hidden sound test.

The debut of the eponymous puzzle series. It has a story about how a frog sheriff rescues a catgirl by connecting lines against his opponents.

Also, hammers. And inflation. And bombs.

Test Menu

The game has a Test Menu that can be accessed by modifying the state for the next state transition.

The state machine is located at E800:0000 and is called at F000:017D. Setting a breakpoint at either address and modifying the state byte value at DS:0208 to 0x82 and continuing execution will place the game into the Test Menu.

There are two tests: Sound (0E) and Graphics (0F), while the remaining selection from 00 up to 0D will place the game state into Story Mode.

Graphics Test

The graphics test can be accessed by executing 0F from the Test Menu and/or by modifying the state byte value at DS:0208 to 0x81.

There are 8 groups and up to 32 sprite animations per group that can be played; with options to pause the animation and/or play the animation in slow motion.

To play an animation, press X3.

To pause an animation, press X4.

To slow an animation, press X1.

Sound Test

The sound test can be accessed by executing 0E from the Test Menu Menu and/or by modifying the state byte value at DS:0208 to 0x80.

There are 19 tracks of background music and 76 sound effects that can be played.

To play a background track, press Y4.

To select the next background track, press Y2.

To play a sound effect, press X4.

To select the next sound effect, press X2.