Chair Entertainment Group, LLC has Infinity Blade (iTunes Link) in the iTunes App Store for $2.99 (normally $5.99) for a limited time.

Infinity Blade is the first mobile game powered by Epic’s cutting-edge Unreal Engine 3 technology, Infinity Blade takes handheld gaming to new heights with gorgeous visuals, adrenaline-fueled battles and advanced character progression in a fully 3D castle realm.

It’s a universal app – Play Infinity Blade on iPhone 3GS, iPhone 4, iPad, iPad 2, iPod Touch 3 (16 GB and above), or iPod Touch 4 for a single low price.

It’s optimized for iPhone 4 and iPad 2 – Includes high-resolution graphics that utilize the enhanced visual capabilities of the iPhone 4 and iPad 2.