plasticbugs.gaia - 0.2.2

plasticbugs Sep 12, 2026

Gaiapolis (Konami, 1993)

Konami’s vertical fantasy shooter on the pre-GX hardware, all of it in gateware:

• 68000 at 16 MHz, game logic
• Z80 at 8 MHz sound board with two K054539 PCM chips
• K056832 tilemaps, K053247 sprites, K053936 rotating ground plane, K055555 priority mixer
• 376x224 at 59.19 Hz, rotated

Controls D-pad / stick move A or Y button 1 B or X button 2 R button 3 Select coin Start start (a second pad plays player 2)

Settings and records are kept in the EEPROM and saved to gaiapols.sav.

ROMs are not included. Build the image from your own MAME gaiapols romset:

python3 mra_build.py gaiapolis.mra gaiapols.zip

and copy gaiapols.rom into Assets/gaia/common/.