Space Duel was produced by Atari in 1982.
Color vector game where player's ship shoots colored geometric shaped "asteroids", mines, enemy ships, and opposing player's ship. A bonus wave adds a multiplayer to the player's score when all bonus objects are shot.
This game is a two-player color version of Asteroids. It has two different modes of play: competitive and team. In competitive mode, each player competes for points. Players can shoot each other for bonus points, but they don't lose a ship. In team mode, the two players are attached together by a "filament". Each player's ship can move and shoot independently while still being attached.