https://github.com/skeeto/autotetris-mode.git
git clone 'git://github.com/skeeto/autotetris-mode.git'
For more than a decade Emacs has shipped with a Tetris game (M-x tetris). For those who are too busy to actually play it, this package will automatically play Tetris in Emacs for you.
Load autotetris-mode.el and run M-x autotetris. It will
run tetris with the autotetris-mode minor mode enabled, which
tells Emacs to play automatically. The mode can be enabled or disabled
at any time, allowing a human to either take control or pass back
control mid-game.