Earth is under attack by an alien force and you are the only one with the skills and weaponry to defeat it! Your mission is to infiltrate the alien base known as the "Virusphere" and destroy it from within, a task made all the more difficult by a seemingly endless swarm of pathogenic minions and their grotesque commanders.
- Eight stages of lightgun-style action throughout the Virusphere
- Pan left and right to engage foes outside your field of view
- Nine enemy types looking to swarm and overwhelm you
- Five monstrous bosses ready to vaporize you on sight
- Seven power-ups to help give you an edge
- Track your high scores and boss clear times to go for new personal bests
- Unlockable gameplay modes
