After seeing the demo that Epic Games previewed at the Apple Keynote, I was stunned how well it looked. Thanks to the kind people at Epic Games and Apple, you can follow the link to check it out on your iOS device (iPhone 3gs, 4, iPad, or iPod Touch 3). Link after the jump.

The app showcases the technical capabilities of Epic’s award-winning Unreal Engine 3 on iPad, iPhone and iPod touch. In “Epic Citadel,” players navigate a fictional castle realm using simple controls and the innovative Multi-Touch user interface. “Epic Citadel” also features stunning visuals and special effects, with an environment inspired by “Project Sword,” Epic’s newest game.

“Project Sword” is the codename of the all-new action role-playing adventure game exclusively for iPad, iPhone and iPod touch developed by Epic’s critically acclaimed studio, Chair Entertainment, creators of the Xbox LIVE Arcade games of the year “Undertow” and “Shadow Complex.” Scheduled for release later this year, “Project Sword” will bring unrivaled visual fidelity and a highly accessible gameplay experience to the iOS platform.

“This is a testament to the sheer power of iOS devices as up until now, Unreal Engine 3 has typically been used to create high-end gaming experiences on game consoles and computers,” said Epic Games President Dr. Michael Capps. “And we’re not just keeping it to ourselves. We’re putting Unreal Engine 3 technology into the hands of game developers all over the world, and we can’t wait to see the apps they make next.”

A small team of Epic’s programmers, artists and testers created “Epic Citadel” in just eight weeks of development time. Unreal Engine 3 is scalable yet packed with the same tools hundreds of thousands of users work with to create games, simulations and animated content.