Also named “Connect 4”, this game is centuries old, Captain James Cook used to play it with his fellow officers on his long voyages, and so it has also been called “Captain’s Mistress”. It’s easy to learn but hard to master. The goal is to connect a line of four horizontal,vertical,or diagonal chips before your opponent does. Tap one the row you wish to drop your chip in. Play with 5 difficulty levels.

http://appshopper.com/games/four-in-a-line