Epic Games has released a walk-through demo of its upcoming RPG for iOS devices demonstrated during today’s Apple iPod event. Codenamed “Project Sword,” the game is an impressive 3D RPG with detailed real-time graphics powered by the Unreal Engine 3. In the full game, players will be able to explore a medieval town and engage in combat with other players over the Internet. The current demo, Epic Citadel, available as a free download from the App Store, provides a simple walk-through of the game environment with no combat options, allowing users to simply explore the detailed 3D realm. The full version of Project Sword is expected to be released later this year.