GROUND ZERO TEXAS
Insert Disc 2 and power up your Sega CD. The "Remove CD 2 Insert CD 1" message will appear. Press:
A, B, Right, A, C, A, Down, A, B, Right, A (ABRACADABRA).
Bonus FMV Sequence
Intentionally lose the game. Wait for the credits to appear and quickly press:
C, B, A in a sweeping motion, then press Start.