Like all of the best puzzle games, Line Up Free for iPhone benefits from instant pick-up-and-play appeal. The game takes seconds to learn, but an age to master. This is a colour matching game in which the action quickly becomes fast and furious, but you're sure to keep coming back for more.
The premise is simple - the screen fills up with different coloured blocks which you can remove by clicking on groups of three or more matching colours. In the style of Tetris, it's a race against the clock to clear the board before the blocks reach the top of the screen.
From time to time a laser beam will appear to help you out, knocking out complete lines of block for you, but the clock continue to tick away. Line Up Free has a number of option that can be used to increase the challenge and ensure that the game will last you for some time to come.
As well as ramping up the speed at which blocks appear, you can place a limit on the number of taps you have available - what will be your high score in this fast-paced block game?