This is quite a standard Tetris game, but with different game modes. The marathon mode is the classical endless Tetris. In other modes you need to eliminate a certain number of lines in the shortest time possible.
Controls
1 Player Mode:
Player 1:
Left / Right Arrow Keys - Move.
Up Arrow Key - Rotate.
Down Arrow Key - Drop.
2 Player Mode:
Player 1:
A, D - Move.
w - Rotate.
S - Drop.
Player 1:
Left / Right Arrow Keys - Move.
Up Arrow Key - Rotate.
Down Arrow Key - Drop.