It would be like, super ultra cool if they made a game controller that can read things, like a bar code reader or something. And then when you play the game, at a certain point you have to scan the special shirt to gain super powers. So it’s like wearing the shirt will get you super powers. The super power shirt! Ta-da-da-daaaaaah!
Freakin-a dude, and then coupled with a Wii, and wild arms swinging around battling super villians!
(inspired by tinyrun noticing how indie game art on tshirts is being sold in Target along with the video game attached to the shirt)

I can see it now, “Dude, I’m coming over to your house to play Supermega Blaster” and i’m totally wearing my ‘Annihilator’ shirt, LOOK OUT!”