Pentis game for iPad.
You have good 3D visual-spatial ability and quick fingers.
This is my favorite version of 3D Tetris.
It is like the BlockOut desktop game.
Pit dimensions are 3x3x18. The pieces have complex shapes. Each game piece consists of 1 to 5 cubes.
The number of pieces is 36.
Speed level is from 1 to 9
Best scores are saved to the Facebook group and twit itself.
Right now the highest score is less 100,000 points.
Also there is flat version of this game with flat 16 pieces.