Gaming halls get hot.
Not poetic hot. Not “summer vibe” hot. I mean back-of-the-neck, badge-sticking-to-your-shirt hot by the time the second demo queue bends around a merch table.
So the outfit matters.
People talk about keyboards, headsets, hotel Wi-Fi, battery packs, and which trailer might drop at the showcase, then show up dressed like they plan to fight a July afternoon inside a black hoodie.

The shirt does most of the work
Start there.
A tee is fine for a two-hour meet-up, but a full convention day is meaner; you sit, stand, crouch near a power outlet, eat something with sauce, and take one photo you were not ready for.
That is why a camp collar shirt makes sense. It is loose without looking sleepy, open at the neck without trying too hard, and forgiving when the hall air starts to turn stale.
If you want a sharper place to compare options, this roundup of the best camp collar shirts gives you the right lane: relaxed shirts that can still look put together.

Do not dress for the mirror only
The mirror lies by omission.
It will not show the thirty-minute taxi ride, the bag strap grinding one shoulder, the plastic chair during a panel, or the moment you realize your shoes were built for standing near a wall, not walking twelve thousand steps.
And yes, shoes count as part of the outfit. Clean sneakers beat stiff boots unless the whole look depends on the boots and you have already tested them on a long day.
I learned this at a tech expo in Mumbai, where one guy in heavy denim looked perfect at 10 a.m. and fully betrayed by cloth before lunch.
Keep the loadout boring
Boring wins here.
Light shirt, breathable undershirt if needed, shorts or loose trousers with real pockets, socks that do not quit, and one layer only if you know the venue runs cold.
It is the same rule as a clean gaming desk: tidy does not help much if the basic setup works against your body.
Skip the fragile fit. Skip the fabric that wrinkles if you breathe near it. Skip anything that needs you to keep adjusting it every eight minutes like a nervous side quest.
You can still look good.
Just dress like the day has weather, queues, snacks, photos, and a controller demo that runs fifteen minutes longer than promised.