Tetrys is a minimalist Tetris clone written in Python. It is cross-platform compatible and has basic gamepad support. There is presently no way to configure what the buttons do; that is an exercise left to the reader.
When running the application you can press the N key to start a new game, and use the ← and → keys to move the current tetrad around the screen. The ↓ key accelerates the descent of the current piece, and Space drops it to the bottom of the well instantly. A small shadow tetrad at the bottom of the well indicates where the current piece will fall.
Tetrys requires Python and pygame.