Mac users interested in Glensoft glentris generally download:
GlenTris is a simple but enjoyable game a la Tetris in which you must place the falling blocks in the field in a way to form lines to score points and eliminate them from the field. Like in the original Tetris, the blocks can be rotated and you can also press the Spacebar to drop them quickly. When you reach a certain amount of points, you advance to the next level.