> He eventually stops at level 29 because at that point the blocks fall to the bottom faster than the fastest human reaction times. As I remember, it's not a h

> He eventually stops at level 29 because at that point the blocks fall to the bottom faster than the fastest human reaction times. As I remember, it's not a human limitation; the blocks fall to the bottom faster than the NES game checks for controller input. Even playing the game frame-by-frame on an emulator, you can't move the tetronimo from the center to the edges of the screen in time. It takes up to 5 clicks of the d-pad left or right, so you need at least 10 frames of time for the 5 on-off cycles. Newer Tetris games deliberately work around this limitation. When the dropping tetronimo collides with something, you're always given at least a half-second to continue moving and rotating the piece before it locks into place. http://tetris.wikia.com/wiki/Infinity http://tetris.wikia.com/wiki/Infinity That's one of many surprisingly detailed rules regarding movement and rotation that newer Tetris games always follow, to create a consistent game and experience across multiple platforms and versions. See http://tetris.wikia.com/wiki/Tetris_Guideline http://tetris.wikia.com/wiki/Tetris_Guideline