In this challenging puzzle game, you need to move the bottom blocks to the black area and fill it up according to the level requirements. Click the blocks to adjust the direction, and the universal white blocks can fill any gaps. The color lid above will automatically cover the corresponding color blocks, and you can get more white blocks. If the black area is not filled and you can't place new blocks, the game fails. As the level increases, you will unlock more complex blocks and the level layout will become more tricky. Only by planning the placement of blocks reasonably can you fill it perfectly and become a master of block stacking! Come and challenge this test of strategy and planning!