If you didn’t quite get your fill of wandering around in an empty game world powered by the Unreal Engine in Epic Citadel [Free], you’re in luck. Codenrama just released Castlerama [Free], a remarkably similar tech demo that allows you to walk around and similarly look at just what the Unreal Engine is capable of on iOS devices.

Per the YouTube description of the above video, it seems like the developers are running into similar issues as the Dream:Scape developer last month with the memory limitations of older devices:

While developing Castlerama, we had to face the fact that newer devices such as iPhone4s and iPad2s are very different from their predecessors, iPhone3GSs and iPads, in that the former have twice as much memory. In order to have the app run on all devices, we had to compromise quite a bit, pushing the old devices to their limits (risking crash if other applications are left running) while keeping the new devices well behind their capabilities. In the future we believe we will have to develop two versions for each application.

Castlerama looks awesome, and if what they’ve released is a “compromise" to work with older devices, I seriously can’t wait to see what the iPhone 4 and iPad 2 exclusive build is capable of. If you’ve got some spare time today and want to see another demonstration of the Unreal Engine, give Castlerama a try.

I’m still waiting for some major Unreal Engine-powered game releases, but I suppose tech demos are a good first start.