those are all DX9\DX10 titles (based on the engine used) with a few DX11 features
I won't bother with Dirt 2 because everyone knows that is DX10 with a few DX11 features.
Alien vs Predator 2 is running on a 7 year old engine called Lithtech Talon. http://en.wikipedia.org/wiki/Aliens_versus_Predator_2
However, for use of Monolith, LithTech Inc. developed a different engine to be used specifically for the company's newest title, Aliens versus Predator 2. This release was called Lithtech Talon and was based on Lithtech 2.2, rather than Lithtech 2.4. Because of this choice, Lithtech 2.4, RealArcade Lithtech, and Lithtech Talon became largely incompatible with each other. However, reviewers still thought of it as inferior to Unreal or Id Tech[1][2][3].
Lithtech Talon's biggest selling point lay in its reasonably good multiplayer support, more efficient when compared to prior versions of Lithtech multiplayer that featured poor networking code. However, Talon was intended as only a partial step towards the true next-generation version of the Lithtech engine.
By 2003, Talon had become outdated, but was still being licenced[4].
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