xtetris 2.5.2

Xtetris is a game involving dropping blocks. As they drop you can move them to 
the left or to the right by clicking the left or right mouse buttons
respectively. Pressing the shift key while clicking the button causes
the falling shape  to  rotate  anti-clockwise  (left mouse button) or
clockwise (right mouse button). Pressing the middle  mouse button  causes
the  shape  to quickly drop. Note that the mouse must be in the window in
which the shapes are  dropping for these actions to work correctly.