If you're a mobile RPG fan, you'll have probably heard of Aralon: Swords And Shadows. It's one of the closest things to a triple-A roleplaying experience you can get on iOS, with bags of free-roaming exploration, full day/night transitions, guilds to join and some nifty 3D graphics to boot. It's a bit like Oblivion, but smaller, jaggier and much more portable.
And now it's £2.99 for a limited time. Sweet. Check it out over at the App Store.