This is a puzzle game, what you need to do is to fill up the remaining blank space. Features: (thinking in explore, health left and right brain) 1. Improving childrens hand-eye coordination, color recognition graphics 2. Training the logical thinking ability, is conducive to multi-level thinking 3. Improving the childrens attention and patience 4. It is good for left and right brain if you play the game often. This game is also good for old people, it can active brain cells to decreased risk of dementia. 5. Need not to worry about missing the block 6. Do not worry accidentally modify question 7. You can edit question by yourself. 8.There are more than 300 questions.