Cheat Codes
Enter one of the following codes at the name screen:
Letters A, B, C, D collected:
Enter "HANG_ON."
Invincible to bullets:
Enter "_©_SEGA."
Letters A, B, C, D, collected and invincibility:
Enter "SPECIAL."
Three extra lives after time reaches zero:
Enter "GP_WORLD"
All cheat features:
Enter "DOKI_PEN"