Eliminator was a color vector game created by Sega in 1981. This space shooter game was similar to Star Castle only the target object could move around the board. Players pilot a space ship around the space playfield and must destroy alien drones, dodge other player's ships and evade and destroy the Eliminator, the huge asteroid base. Destroying opponents is not done with straight shots however. The players fire causes the target that is struck (with the exception of the Eliminator itself) to rebound and careen off in another directon. With a little skill shots can propel the enemy into the Eliminator thus destroying them. There is only one way to destroy the Eliminator, fire a cannon blast down the trench into it's center. This can be done directly or via a ricochet. Failure to destroy the Eliminator after a preset time causes the center to become an active drone that flies out of the Eliminator to shoot down the player with a destructive energy blast. The playfield is enclosed in an invisible barrier that bounces shots and ships off it and increases the chances of killing the characters. Once the Eliminator is destroyed the game then repeats with a tougher set of enemies. The Four player version allowed 4 players to simultaneously make attack runs on the Eliminator while trying to evade or destroy your opponets in order to do so.