Sikkmod/Wulfen's Textures for Doom 3
Not strictly from this year but here by virtue of significant recent updates. If Rage left you questioning the genius/foresight/influence/marbles of one John Carmack, let the properly modded Doom 3 splash all over your grumpy face like a hyper-demonic poo pump (or whatever those things are).
To put it really crudely, user Sikkpin brings the effects while Wulfen (and to a lesser extent another modder called Monoxead ) brings the textures. There's a lot more to it, though. Sikkmod adds a beautifully implemented list of options to the game's menu, letting you toggle but also heavily customise things like ambient occlusion, colour grading, bloom and HDR. The icing on the cake, though, is the experimental parallax occlusion mapping (POM).
Given supporting ultra-quality textures like Wulfen's , POM adds a relatively primitive relief effect to the game's grungy surfaces. It's also an effect, though, that makes you want to reach out and touch all the stuff you really don't want to have on your fingers. The caveat - and it's a big one - is that it's far more demanding and less reliable than tessellation in a DX11 game. When the effect breaks, it breaks bad. Still worth it? Absolutely.