"I have a huge collection of fighting game backgrounds as gifs. Figured you guys might appreciate it."
Low-poly art is an aesthetic in 3D modeling that works with intentionally limited resources to emulate the look of first generation three dimensional gaming, and also a response to the increasing role of mobile and web platforms as 3D game spaces (some more examples can be found in this thread). A great example of this technique is game designer and 3D artist Invader Ace. Their Tumblr has character designs, game mock-ups, and small vignette scenes. A full portfolio can be found at their website, here. [more inside]
TIGsource is a blog about indie video games that also has a very active forum community of both amateur and professional indie game designers/programmers/artists. About two months ago one of the forum members (Daid) whipped up a tool to display the art images of a particular thread so he could find something, and it turns out it's a pretty great thing just to browse for its own sake, which you can do here. Updated once a day and, obviously, image intensive. [previous tigsource mentions]