CheatCC: Centipede Cheats, Codes, Guides, Walkthroughs, and Cheat Codes – Dreamcast

Centipede Cheat mode

While playing the game, hold L + R + A + B + X + Y and rotate the Analog-stick in either direction. If you entered the code correctly, the message “Get a life” (for extra lives) or “All levels” (for level select) will appear.