Vitetris

vitetris is a Tetris clone written by Victor Nilsson. It was originally written with only Linux and minimal library dependencies in mind, but is now very portable and can optionally make use of a curses library or Allegro.

License
The game is licensed under a 2-clause BSD license similar to The FreeBSD Copyright, but does not include the last paragraph about views and conclusions.

Gameplay
The game essentially follows the gameplay of the early Tetris games by Nintendo, with the classic modes A- and B-type (marathon and line clear). However, in vitetris there is a short delay before the piece is locked (after it has landed), which makes it possible to play at higher levels.

Two-player battles can be played on the same computer or over network. When clearing several lines at once, garbage is sent to the opponent.