Type in the following codes during gameplay:

• CBYXYC - Passcode for M2, P1
• XABXAB - Passcode for M3, P1
• AZCBXC - Passcode for M3, P2
• YYBBCY - Passcode for M4, P1
• BAXCXX - Passcode for M4, P2
• ZAZACC - Show credits
• ZZZCYX - Enables level select