ThinkO for iPhone and iPad is a mind challenging puzzle game that focuses on your cognitive skills. The goal is simple: to move the rows and columns of rings to match the same colored squares. The challenging part is that every time you make a move, more squares start appearing, so if you aren't efficient with your choices, you will trap yourself with too many squares.
Concentration, problem solving, processing speed and memory are all required for being successful at playing ThinkO. As the game evolves, the levels become more challenging, requiring more sophisticated thinking skills. For example, as you play the game, large rings will appear in the levels. The rings are a bit of a hindrance because each one takes up the space of four squares, thus requiring you to move the two rows or columns containing it at a time. To get rid of a ring, you must make a sufficient amount of matches that are the same color as the ring.
In addition to the above mentioned rings, ThinkO also has special rings that will help you in the game. They become available as you progress and can also be purchased as in app purchased. Here's a list of the different rings available:
Although I haven't yet progressed very far in the game, I am really enjoying ThinkO. Puzzle games are my favorite because they require you to think, and ThinkO is no exception! ThinkO is definitely a great time-waster, but don't think of it as waste of time to play it -- by playing ThinkO, you are exercising your brain and improving your thinking skills!