Free play:
At the Opening screen, hold L1+L2+R1+R2 and press Start. Keep the buttons held
and press Up, Up, Up, Up, Up, Up, Up, Down, Up, Up, Up, Up, Start. You’ll hear
a sound to confirm entry. Now go to the ‘Configuration’ screen to toggle credits
and level select.
GameShark Codes
Infinite Lives P1800d784c0005 Infinite Special Attacks P1800d787a1000 Invincibility P1800d9c080095
Thanks to Revolution readers David LaForest, Colemicheals, and PKaopua!