Canavar Okey app for iPhone and iPad
Okey is a tile-based game, very popular in Turkey. It is almost always played with 4 players, though in principle can be played with two or three. It is very similar to the game Rummikub as it is played with the same set of boards and tiles but with different rules.
for rules : http://en.wikipedia.org/wiki/Okey
for English : Tap "Ayarlar" and choose English