Tortis is a simple clone of Tetris written in C. It copies basic mechanics such as scoring, but modifies timing, difficulty levels etc. based on how well I play Tetris (i.e. not well.)
WASD keys move the piece (W rotates). Use Q for quick drop. Use enter to choose the active menu item. P pauses the game. R toggles whether a projection of where the piece will be is shown.
There isn't an option to install it system-wide at the moment. To compile it,
simply run make. Then you can run it by running ./tortis.
Rotation doesn't work like in the original Tetris games, so several strategies involving rotating a piece into place don't currently work. Saving a block is not implemented. Needs more information on controls.