Zelda: Phantom Hourglass Wallpapers

Here they are.

Diablo III Wallpaper

Simple and evocative. Available here.

Care for a Rogue Trader Wallpaper?

Excellent, for Fantasy Flight has more than a few top-quality, high-resolution desktop wallpapers to help you appreciate the beauty of the dark, Gothic, war-torn future promised by Warhammer 40,000.

Swarm Wallpapers

They are the official ones and one can only hope that Swarm will end up being the next Lemmings (which I sincerely doubt). Anyway, the wallpapers...

Gunstar Heroes Wallpaper.

Here, here.

Classic Elite Wallpaper

Get your space explorer's desktop here.

Atari 2600 Adventure Wallpaper

A truly retro-beautiful desktop by the Retroist.

Gemini Rue Wallpaper

If you love neo-noir stuff, you'll love the official wallpapers of the rather amazing Gemini Rue adventure.