A group of aliens has attacked an underground mine and it is up to you to rescue the survivors and drive the aliens away.
Unlike most ships, the underground ship you are given puts you in complete control. You hold the button to move forward and the D-pad to rotate. If you let go of you will start falling toward the bottom of the screen. reverses thrusters. shoots. cycles through weapons and special items. Controls are fully customizable in the game's option menu.
Navigating the ship through tight corridors and dealing with the realistic physics is as important as combating enemies.
The game features a total of 9 stages. Stage 1 to 7 start with a short briefing, explaining the mission objectives. Stages 8 and 9 require the player to figure out the route and objectives by himself.
Later stages also include puzzle elements, e.g. transporting a mirror in order to reflect laser beams. The final objective is to take out the mastermind behind the alien invasion, Svin.
Testers: John Amirkhan, Jennifer Brozek, Blair Bullock, Daniel Caraballo, Atom Ellis, Lawrence Gibson, Rick Greer, Richie Hideshima, Lawrence Jeung, Jason Kuo, Vasily Lewis, Tony Lynch, Michael Madden, Jim McCarthy, Mark Paniagua, Joanna Pataki, Andrew Podesta, Siegfried Stangenberg, Wesley Gittens