Screwjumper!

Screwjumper! takes the player behind the helm of a spaceship run by a wrecking crew of sorts out to attack twenty different alien mining companies scattered throughout the galaxy in an attempt to send them back to their homeworld. Choosing from six different characters, the player descends into a giant mining tube, destroying enemies and obstacles in their way until they reach the main reactor. After the player destroys the reactor they must navigate through another tube to an awaiting spaceship...