Here are some cheats and tips for the game Truxton.
Level select:
Press Up, Down(4), Right(8), Left(16)
at the title screen. The sound of an explosion will confirm correct
code entry. Press Start to select a starting level.
Extra lives:
There are green, red, and blue circular buildings on several
of the oval asteroids. Shoot such a building with a weapon of
the same color to reveal an extra life.
Super Truxton bombs:
Fire a Truxton bomb and pause game play to keep the explosion
on screen. Remain paused for at least twenty seconds to resume
game play. The enemy target should be destroyed.