While the game was successful and validated Syzygy's belief in the future of arcade video games, selling over 1,000 cabinets by mid-1972 and ultimately 1,300–1,500 units, it was not the runaway success that Nutting had hoped for. The game spawned one clone game, "Star Trek" (1972), and Nutting produced a two-player version of "Computer Space" in 1973 without involvement from Bushnell and Dabney. The pair left Nutting in June 1972 and incorporated Syzygy as Atari, launching the successful "Pong" (1972) as their next arcade game. "Computer Space"s release marked the ending of the early history of video games and the start of the commercial video game industry.