

You need fans to blow the air OUT not in, and create a chimney effect between opposite sides of the building.
A small out blowing fan can be enough, if run all night.
Blowing out will cause air to be sucked in from the opposite side. Having multiple fans will only mess up the air flow and reduce the efficiency. Better two fan on the same outgoing window.
Of course, that will never cool down more than a few degrees above outside temp because walls thermal cycle will bring inside day heat at night and bring inside night cool in daytime. Specially thick or well insulated walls are designed to do exactly that.
So yes walls will warm you up at night, that is not avoidable. A well insulated wall will do that instead of bringing heat in during daytime… But heat is there and must be dissipated that’s physics. Night time is the best option.
Edit: blow out at night. During daytime blow around, best way to keep cool is move that hot layer of air that get stick to your skin with a fan. Same temperatures but so much more bearable.












Quit thinking as a windows user now you are on Linux.
You running a pirated game with proton? Or looking to run windows inside Linux?
In any case run the game offline, disconnect the PC from internet and you should be safe.
What? It’s an on line game? It’s a game that need internet access to run? Then what are you complaining about? There is nothing you can do to be “safe”.
Anyway running a windows game on linux with wine or proton should be safe enough from most of the possible threats (environment is too different). Running in a VM would be a serious hit on performances even if you use qemu+KVM (forget about virtual box) with all drivers set to passtrough and you give up your video card on Linux and pass it to windows
At that point, you are again at risk because e you are again running windows …
Define your threat at least. That would make a response easier
My guess you are overthinking stuff.