I thought I’d take time out to play a game on FreeBSD while lecturing you about not playing games on FreeBSD. :)
Actually, FreeBSD is great for retro gaming and a few others.
But the question keeps getting asked:
“How well does Steam work on FreeBSD?”
Answer: it doesn’t. Not yet anyway.
SteamOnBSD is a project that looked promising but runs a very unsafe script with root privileges so I wouldn’t advise it).
My advice is to use the bsd’s for what they’re good for - everything else - and use a dedicated gaming machine if it’s important to you.