
Fortunately, my friend (and cohort during my time at Kotaku) Mike McWhertor and his partner Scott have created game-inspired shirts that actually look good even to nongamers. If you haven't yet heard of their company, Meat Bun, you should definitely check it out. It's like, game clothes for fashionable grownups.
Yes, I look like a giant child flaunting this particular design, which might be my favorite for reasons clear to anyone who reads my work, but other people will probably look fashionable. I think this Ikaruga/Screaming For Vengeance crossover is actually the coolest. I also own this 1942 shirt with Cammy doing pinup duty on it. Love-love-love it.
Anyway, if you'd like to represent while still being subtle, here's your solution. I pride SVGL on having a readership that wants to elevate discourse around games, so you guys prolly want to elevate fashion around games, too. YEAH!