TetriCycle is Tetris projected onto a cylindrical surface. Rotate the cylinder left/right such that the descending piece falls into place.

TetriCycle can be distributed freely and should never be charged for.

Changes:

8th Release: 10/19/10
Added classical mode (for classic tetris).
The Player Profiles ‘rotation’ label now has a ‘piece’ option that allows you to move the piece instead of moving the playfield; this is similar to classical mode, except that the piece is allowed to wrap around in cylindrical mode.
The Player Profiles ‘guide’ label now has a ‘line’ option, so when selecting the guide mode, you can choose between a shadow piece, or a guide line.

http://wiibrew.org/wiki/TetriCycle