99 Bricks is Tetris in that familiar-shaped bricks fall from the sky, one at a time, and can be moved left and right and rotated before settling at the bottom of the well.
Where it departs is that the objective isn’t to form solid horizontal lines to clear space. Quite the opposite: you have to build a tower of a certain height. The bricks possess a certain physics and will topple over if you haven’t laid sufficient foundation – tricky given the irregular shapes and the fact you only have a limited number of bricks.
As a Tetris clone with a twist it, er… stacks up quite well.
99 Bricks [Kongregate]