REX is a streamlined take on chess with fewer pieces and fewer tiles, but with plenty of space to scheme and strategize against the computer or a friend.

The rules are simple making it easy to learn, and each game takes between 5 and 10 minutes. Players take turns capturing their opponent's pieces from the board, and whoever clears the board first wins.

You can play against a friend or against the computer. When two people are playing, they take turns using the same mouse (or touch screen).

Pressing "I" on your keyboard during play will show the Instructions. Clicking on the (?) icon on the bottom right of the screen will show all of the available keyboard commands.

If the game is running slow on your computer, press the "Q" key on your keyboard to lower the graphics quality settings. The minimum supported resolution is 800x600.