Star Versus

A competitive one-versus-one shooter; outthink and outmaneuver your opponent. Frantic and fearsome gameplay that's quick to pick-up but impossible to master!

Features

• Four playable characters
• Four arenas with varied hazards & obstacles
• A deep, complex combat system
• Unique special attacks
• Random bonus items
• Options menu, to play in new ways
• Single player campaign

Source:

official game website