Damn, what a ride. I was expecting the discovery of some glitch would enable them to get past the level 29 killscreen, but instead they did it by optimizing their capacity to push a button fast. Kind of hilarious how the game breaks down in the glitched levels with hard-to-see color palettes that anticipate the "invisible blocks" modes that some modern Tetris implementations have. And then there's the accidental 810-line endurance level with an all-green color palette.