I'm guessing most of you guys have heard of that game :) . I've always been a fan of Cthulhu art, and I plan on animating this. Custom work, made this in 3dsMax 2012, rendered in iRay 2.0, rigged, skinned, UV'd, textured, etc. A screen shot from Max;
The small boxes along the tentacles = the rigging. One photometric light is out of frame, -the back light. The bottom light is visible. Created some darkness depth using a Z-depth pass (tentacles going into darkness). It's not a 'classic' Cthulhu god, more of a variation inspired by other lovely, creepy skull, tentacle Cthulhu works.
