Players are "Immortals", struggling to eliminate all opponents and claim "The Prize" as the last player remaining.
Players have unlimited shots and unlimited missiles. At the start of the mission, both shots and missiles fire very slowly. As the mission progresses however, the shot and missile speed increases until it reaches a maximum at the climax of the mission.
Zapping players will build up special points, but the only way to eliminate an opponent is to missile them. When a player is removed from the mission in this manner, their score and special points are awarded to the player that eliminated them.
Destroying the in-field targets also awards special points. Special points can be used to activate the following special abilities:
Reset: Resets the player's weapon, allowing a missile or another shot on an opponent who was just zapped. To activate, hold trigger in while up. Costs 10sp initially, drops to 5sp towards end of mission.
Shield: Provides temporary protection from missiles. To activate, hold trigger in while down. Lasts until player is reactivated or 10 seconds passes. Costs 5sp initially, increases to 30sp towards end of mission.