Unreal Engine 2 is a complete game development framework targeted at today's mainstream PC's, Microsoft's Xbox game console, and Sony's PlayStation 2.
The UnrealEngine2 Runtime software is the state of the art in cross-platform, real-time 3D rendering solutions for the desktop. Taking advantage of the latest advances in hardware-accelerated 3D, the Runtime provides a stable, robust platform for interactive walkthroughs and simulations. You can use this free version for non-commercial, non-gaming products.
It's great,and it has low system requirements.Only thing that confuses me,is that examples for Unreal Engine 2 Runtime on Unreal Development Network site are in some other format than native Unreal Engine 2 Runtime's format.But it can be learned trough Unreal Tournament 2004,so it's not that big kind of a problem.Nice download.