Tetrys.

A fun block stacking game that plays in a popup. A fan version of Tetris, It's a much simpler concept of the classic game. Completing a horizontal line with blocks will clear the line, but make sure not to stack a block over the top line or that's game over! Clearing 4 lines at once, or a "Tetris!" will award you the most points. Compete with friends, compete with yourself and set new high scores, or just fill the time while you're not doing anything else. Tetrys is a fun, simple, easy to play game for all audiences and userbases.