Game.

All of the images below, to me, help answer the question what is game culture, and within that, what is gamer culture. I think that gamer culture could be separate from Game culture, or possibly seen as a sub-culture. Gamers have their own world within Game culture and there are many different types of gamers, sub-cultures within sub-cultures.

People queuing for the release of the Playstation3. Playing games whilst waiting.

Concept art for the game Mass Effect.

Crowds at E3 trade show.

Cosplay for Halo.

Xbox360 with a built in LCD screen.
http://kotaku.com/gaming/hardware/portable-xbox-360-lcd-screen-252900.php - this site also has an image of a detachable screen for the 360.

Halo3 Mountain Dew.

Thrustmaster Wii wireless controller.

A giant, playable, Super Nintendo controller.

A custom Xbox360 controller designed for a Hummer.

A very odd design for a PS3 sony controller.

Gamer comics.

http://www.little-gamers.com/

Little Gamers is an online webcomic about a warped version of the lives of the people who write it, or at least that's what it appears to be. Although they aren't always talking about games I think it would be safe to say these people are gamers.

http://megatokyo.com/

Megatokyo is about two friends who by a series of random events (including attempting to get into E3) end up in Japan with no way to get home. One of them gets a job working in a store called Mega Gamers and the other "teaching" English at a Japanese high school and their lives unfold in hilarious situations.


More...
http://www.penny-arcade.com/

http://www.ctrlaltdel-online.com/

http://grumpygamer.com/