Every day, the world's best computer RPG gets closer and closer to release on iOS. Currently, in order to run Ultima VII, you need to jump through a few hoops, but as Ultima Codex showed, it is possible.
“Happily, a jailbreak is not required. To install Exult, you’ll need to grab the code from GitHub, open it in Xcode (specifically: open the project file — Exult.xcodeproj — in the iOS subfolder of the code), and build it for your device. Sadly, Xcode is only available for OS X, so if you don’t have an Apple computer at home (or OS X running in a VM, I suppose), you’re more or less out of luck for now.”
Further instructions can be found at Exult's Discussion Forum.