Here are some cheats and tips for the game Battletoads.
Six lives:
Hold Down + B + A and press Start
at the title screen. An explosion will confirm correct code entry.
Alternatively, hold Down and press A, B,
Start at the title screen or continue screen.
Continue game play:
Allow the continue timer to expire after one of the players
loses all lives. Press Start on the next map screen to
continue game play.
Control dragon:
Defeat the tool worker and take the stick/sword from him.
Use that sword to defeat the dragon during the second half of
level 1. Position your character on the dragon and press A
to ride it. Tap A to fly and press B to shoot fireballs.
Level warps:
Level 1
Quickly head butt the first pair of pigs, then run to the
right to find a warp on the first ledge.
Level 3
Aim for the tenth wall on the fifth speeder course to find
a warp to level 5.
Level 4
Fall halfway onto the first platform in the last section of
this level. Then, quickly and repeatedly jump up to find a warp
to level 6.
Level 6
Ride the snake as high as possible in the second section of
this level. Then, run right, jump, and run right again to find
a warp.