Doing a puzzle reinforces connections between brain cells, improves mental speed and is an especially effective way to improve short-term memory. Jigsaw puzzles improve your visual-spatial reasoning.
Therefore, Bloxorz game is a good choice. the kind of game seems to be very easy, but players always need to try hard to think about the next step or even some next steps to arrange something into the its correct position. From the lowest level to highest one, from boring to interesting, it belongs to one click from your computer mouse or hands.