Asteroids Deluxe is a vector graphic arcade game released in May 1981 by Atari Inc. as the sequel to Asteroids. It was followed by Space Duel in 1982 and Blasteroids in 1987. Key changes in Asteroids Deluxe were designed to combat the saucer-hunting strategy of Asteroids, which allowed experts to play for extended periods. The game is significantly more difficult than the original. Ports of Asteroids Deluxe were released for the BBC Micro in 1984 and the Atari ST in 1987.