This is a game collection that includes many puzzle solving games, such as Sudoku, Tangram, Let Me Escape, Binario, Bridges, Shikaku, NumberChain,Connect，WordSearch and more. Each game has eight levels of difficulty, and each level has been fully unlocked without any cost. Each game has thousands or even tens of thousands of levels, which can be played for a long time. Less advertisements, can be played without WIFI