Black Dawn 
Saturn


Level Select:

 
At the "Press Start" screen, press and hold C, press and hold B, press and hold A, press and hold Up, press and hold L. Then release A, then C, then L, then Up. You'll hear "Blackhole engaged" to verify entry. During the game, press and hold A, C, Up, L to skip to the next level. 


Wingman:

 
While playing, pause the game and press Z, Z, Z, C, X, X, X, B


 


Thanks to Revolution readers Wank the Biscuit!