"It was one of the first games to popularize the play model of playing endlessly against increasing speed for survival, as opposed to beating levels or clearing a predefined number of lines."
But is this so notable? Gerasimov's Tetris was A-type, and so were the NES games by Tengen and Nintendo. The only game that I can remember from the late 1980s that concentrated on B-type was the arcade version of Atari's Tetяis. --Tepples 12:06, 22 February 2007 (EST)
How is a "level" defined? 10 lines like in Nintendo's versions? --Tepples 12:06, 22 February 2007 (EST)