A vertically scrolling shoot 'em up. After the Xenites' defeat in the Galactic Conflict which took place in the first Xenon, they have returned with a plan to wipe out the player's history by planting four bombs in space-time areas. The Megablaster pilot will have to fend off the bizarre wildlife around them. It is necessary to destroy the largest animal in each area as they have been fused with the bomb; once the creature is slain, the bomb is shut off. (wikipedia)