A design I made a while back. My own original idea.
Feel free to use it!

Something like that [but better drawn] on the front. And then on the back, "BOOM Head shot".

a t-shirt with a combine harvester on the back, with "check out my new combine harvester", and on the back is the same picture, except with Gordon Freeman driving it and a combine soldier stuck in the blades.

Got an idea for a portal shirt, its a shirt with the following words.
"I [Test Subject Name Here] from [Subject Town Here] have completed the Apeature Science Tests"
or something like that.

you need to make a shirt that says "Geek/Dork Multi-class"

I threw this design together kinda quick in photoshop so it's a little sloppy. Basically this shirt idea is my tribute to all the juggernaut using whores on Call of Duty.

think more PS3 and FPS based t shirts are needed, i would pay good money for funny BF2, COD, warhawk based t shirts.

no official ideas as yet, but im sure there are some floating in the ether

"Don't Daze me Bro"

With a picture of a rouge sneaking, a Dazed character, and the caption "Don't Daze Me Bro" Underneath

I'm thinking of a shirt with "Kiss My Solid Snake" Written on the back with silver letters and a picture of Old Snake below the letters.

I think we really need a t-shirt design with Left 4 Dead in mind, since it is quite a popular game at the moment. Maybe show Louis (the black guy) in the safehouse alone...with the caption: The Black Guy Lived...(this is not a racist comment, its just that usually the black guy dies in movies or game story lines...etc).

okay t-shirt that says

I [Companion Cube Pic as the "heart"]
Companion Cube!

or 'I'll do it during maintenance'

Pac-man is moving down a hallway, eating the white pellets as he goes. At the turn a few seconds away, is Master Chief hiding behind it, and one of the pellets has been replaced with a lit plasma grenade.

cod4 juggernaut perk symbol that says "can't touch this"

How about a tshirt with Clyde, the ghost from the Pac Man game? I've been looking for a tshirt like that :)

A road type sign saying "DO NOT PUSH RESET" [something to that effect] about Animal Crossing-Mr. Resetti.

In light of the holiday season (a little late), but the PORTAL gun [name?] as a bright vector graphic, with three symmetrical eyes around it saying "No...I'll shoot your eye out." Or something to that effect.

a shirt with mariodressed like santa and a little girl
and the girl says "santa"
mario goes " no it's a me, a mario!!"

Text, which says 'Gone fishin' and a WoW fishing pole coming behind the text with the lure and possibly the depleting bar. The whole thing could be in the back for added nerdy effect.

A picture of Delta Squad with Marcus Fenix in front, then Dom, Cole, and Baird in the back with the words "Support our troops" under them. Delta squad could also be replaced with some spartans or other great game soldiers.

A picture, or maybe silhouette, of Star Wolf with the caption "You're good..." on the front and "...but I'm better." on the back.

This is more of a response to Izzy-Rae's plea for a woman's underwear design than anything. It can be used either for a shirt or underwear, but definitely for women. Related to Bioshock, the words "Can I call you Big Daddy?" and then a picture of a Big Daddy underneath it if it's on a shirt and if it's on underwear, then have the text across the back.

a mii with a suit and tie that just killed another mii..under that
"wii kill"

Let me know what you think, should I submit it? If you guys like it I might make a version that says sorry guys instead.