[nurbl]

Tricky Towers is fun and while it has various silly features that adds randomness (e.g. wind), it still rewards skill enough to feel fair.

It follows the tetris logic of pieces staying in the "grid", until they touch another piece. Then they turn into "physical" 2d pieces with weight, friction etc. So it's very much like tetris in the beginning but unless you keep your tower very regular, it becomes increasingly harder to place new items. I bet it was a lot of work to tune the physics engine!