Morocco 4+

I have a ton of games on my iphone, mostly ones I paid for, and this free app gets the most play from me!
Initially, even on easy, this game was spanking me hard. I was getting frustrated, I played 20+ games and I never won once!
Then I decided to actually study HOW the A.I was beating me so soundly. I played several games, and really observed the moves the game was making, and started to understand how poorly I was playing against it. Long story short, in the space of one morning I went from NEVER winning, to destroying my opponent every time. When EASY mode was no longer a challenge, I went to MEDIUM and found I could win every time as well. Finally on HARD mode it is killing me again, forcing me to improve my game even more.
Very fun and challenging, I just wish on HARD mode it wouldn't think for quite so long... sometimes it pauses for 30 seconds or longer.

IF YOU WANT A GAME THAT CHEATS BE MY GUEST A GET THIS

I've played more games of Othello since downloading this than probably in the whole rest of my life combined. Good game, well-implemented. I like the simple clean look of it, and the optional show-available-moves capability, and the fact that I can play a quick round in ten minutes while waiting in line. On the Hard level, it's a challenging game for me; I can beat it if I set it to show me available moves, but not if I don't. (But I'm very far from being an expert player; ymmv.) I strongly prefer Morocco to the other Othello app currently available, which I downloaded, tried a few times, then deleted--the other one is okay, but this one feels much more polished to me.

And the developer of Morocco is very responsive -- I sent him email to tell him that the game had hung, and he responded quickly with a note asking me to send a screen snap so he could check on whether the problem was the known bug that he had already fixed for the next version.