I think I have over 60 apps on my iPhone. I use six.
Tusk Battle is a turn based arcade game inspired by first game installed in a personal computer since 1952, tic tac toe. Game consists in a match between two players, the scope of each one is to collect three contiguous equal cards (between 4 seeds: skeletons, sharks, chickens, and rabbits), in a 4×4 grid.
Have a look to the website!