Here are some cheats and tips for the game Bug Too!.
Cheat Menu
Pause the game and press L, A, Z, Y, Left, Right, A, Down, Right, L.
Flying Mode
Pause the game and press L, A, Right, L, Left, Down, Down.
Unpause the game, then hold Y to fly around the level.
Invincibility
Pause the game and press R, Right, A, L, Right, A, Down, Y.