Sonic's Secrets: Bubsy 2.

Cheats.

All the following cheats are entered on the title screen:

50 Lives. B, Up, B, B, A.
99 Diving Suits. B, Left, Up, B.
99 Nerf Ballzooka Shots. B, A, Left, Left.
99 Portable Holes. Right, Up, B, B.
99 Smart Bombs. C, C, C, Up, Down, C.
Invulnerability. C, A, B, C, Up, Down.
Jump Frenzy. B, A, B, C.
Mark All Levels Complete.   Up, A, A, A, Down.