Wood puzzle is a classic number sorting game. There are multiple levels of options to train your brain. Play classic number games every day and stay active! Fun puzzles: • Easiest jigsaw puzzle, easier to get started and complete challenges. • Multiple difficulty levels: 3x3, 4x4, 5x5, 6x6, 7x7, 8x8, free of charge. • Game rewards can be exchanged for wood board materials, and the experience is more different. • Don't think this is just a simple game, the higher the level, the more challenging!