TK Tetris
TK Tetris is a puzzle game where seven different formations of continuously descending blocks must be moved horizontally and rotated to create a solid horizontal row. Once a solid row is formed, it disappears, thus lowering the "wall" and allowing more descending blocks to be arranged into new rows. The blocks descend faster as the game progresses. The game is over when the "wall" of blocks reaches the top of the game "board."
(Note: Although this online game works in both IE 4+ and Netscape 4+, IE is strongly recommended. Netscape does not display the game's graphics accurately.)