Use keyboard arrows to move and push the box you want.Click undo to undo a move, or reset to reset current level.Click arrows to select the level you want to play, turn on sound. Plinx is a great mind game puzzle. It's extremely challenging. The objective is to place the boxes to their corresponding shapes. Plinx is a remake of an old dos game called Pinx by William Soleau. Plinx has 20 fun and challenging levels to play, enjoy.