Four is the #1 brain puzzle game. Simply fill the numbers so that each row, each column and each square has all the numbers 1, 2, 3, 4 and you will win the game!
Features
◆ Millions of puzzles of varying difficulty levels
◆ Undo
◆ Highscores and achievements to compare your level with that of other players in the world
◆ Simple and clean interface
◆ Save / load unfinished games