This is the best roguelike on the iOS today.
When you first start, you will notice that the graphics are not as good as other iOS Roguelikes and the controls take some getting used to, but no one ever played Roguelikes for the graphics.
Controls do take a little getting used to, and I have on occasion hit the wrong button due to their size.
Aside from that and the lack of sound this game is a perfect fit for the iPhone or iPad. Games are quick, which I like in my Roguelikes. Monsters stats are created randomly, so no two monsters are alike in any game, or even in the same game. This makes the game tense and makes it so each encounter in important, and you are never simply going through a level, slaying every monster you see, knowing you can overpower them, and slowly becoming bored.
Due to this mechanic, death comes quickly and is interesting. I love discussing my deaths in Roguelike games, and this game will give you plenty to talk about. Lots of items and classes and constantly bickering gods are the icing on the cake for this great game.
I have noticed some people complaining about the ten dollar unlock price for a free PC game. The game is free to download and is free up to level 15. If you decend beyond that level, then you have received 10 dollars of fun from this game and the price is not much to ask.
In short, if you enjoy roguelikes, you owe it to yourself to try this game.