Just go the gamer tee well unless you are potentially looking for something more
(plus a gamer tee makes you stand out to other gamers)
Awww, see, I was thinking Do I dress for the company or the location? and now you've made it into something more! I've been told I look good in t-shirts.....
I admit though, I am far from girly when it comes to attracting a potential fun buddy. I dress how I want to dress at let people make up their own minds
It's less pressure that way to try and look good all the time (which is a hard ask for someone that looks like me!)