I would like to introduce you to this simple but great game. Its name is "Dots", it's free and available on the AppStore.
"The task is simple; connect as many same-colored dots as you can in 60 seconds. Get competitive by connecting Twitter and Facebook to see your friends' scores on the High Scores list. For the first time in Dots, an un-timed, moves based mode is available; kick back and take your time while planning strategic moves. You can also prove that you are better at Dots than your friends with our local Multiplayer mode. Play a board then pass to a friend for an ultimate one on one showdown."
I'm really enjoying it.