Three blue circles, nine squares and hours of play. That's what Israeli firm Nitako's "Move: A Brain Shifting Game" is.
It's another one of those mobile phone games proving that with a few basic rules, you can create an almost infinite number of games.
The object of the game is to move three circles (at least at the relatively early stages) to a colored squares in as few moves as possible. But there are two problems that complicate (but also solve) the entire puzzle.
All of the circles move together, and there's a spot that blocks their path. You have a limited number of moves to solve the puzzle, and of course, the object of the game is to do so with fewer, sometimes much fewer, moves.
From here, the game takes you through about 1,200 levels in all. (From Level 300 and up, you have to pay 99 U.S. cents). And at some point, they also begin to expand.
During the course of the levels I played, it seemed that the game was maintaining its flow by providing a series of relatively easy tasks interspersed with difficult and frustrating steps. And then the game proves how it earned its name. Your brain struggles to understand why the circles don't move into place. And when you finally solve the puzzle, you sometimes have to repeat it to be sure you really know how it happened.
The simplicity is also maintained in the game's design. There's no excess of special effects or fancy animation, and truth be told, I wouldn't object to a tad more pizzazz, even if it isn't essential to turn a game into a serious time waster.
Free. Available for iOS and Android systems.