You are invited to a fascinating and quite original puzzle game called Klocki. Its elements are blue square tiles with pale pink lines drawn on them. The task is to get a solid, unhidden line. To do this, you can rearrange the blocks by swapping them. Click first on one selected block, then on the other and they will change location. When you get the desired line, it will shine in white and you can continue the game. With each level, the tasks become more difficult in Klocki.