At the title screen, select the "Key Assign" option. Once inside, use the X68000's keyboard and press Enter to change the keys of both players. The symbol/English letter will be on the left and the Japanese character on the right. Player 1 keys should be changed to: Comma (ne), Z (suokon), Colon (ke), Z (tsu), B (ko), 4 (u). And Player 2 keys should be changed to: F (ha), U (na), C (so), K (no), B (ko), 4 (u). Now, start the game and press the following keys to turn on/off different effects: