Maybe I missed something here.
There is
/usr/ports/games/ for I don't know how long, but I bet since the dawn of FreeBSD.
Those are the games run natively on FreeBSD.
One may discuss if those are great. Some to me seem unfinished and not continued for a long time. Some others are just useless experimental garbage. Many in my eyes are worth to be removed from the ports tree, since they simply don't work. At the same time others are really worth a try, like brogue (B-rogue) to give just a single example.
Sure, only very few come optically like from commercial projects.
Don't you underestimate the effort graphics need.
But for sure there is not only garbage in this port.
Maybe the original idea of this thread was another one completely:
In my eyes games are a very important point of to make an operating system more popular, so I am convinced FreeBSD can only profit of providing more,
better games. But I am also convinced of doing a professional, solid, reliable OS has more priority than make it a gaming platform.
I would never demand to bring more/better games to FreeBSD. There are way more important things to do.
I am a gamer. I knew what I give up when I switched 100% to FreeBSD. And I did it consciously.
Since then I learned to live with way less game expericence, but it makes me way more productive on other things.
I learned what I really love about computergames I can get on an even higher level with setting up my FreeBSD, and programming.
This may sound like

old greybeard senior teacher tells you to eat your spinach, but it's true.
There is dosbox, wine, and all its extensions up to running steam, and VMs, and hypervisors to run games from other operating system somehow under FreeBSD. Several people work on it improving that.
You may ask how to contribute.
Also, if I'm not satisfied with the game experience under FreeBSD, I have the choice to dual-boot, or get a second machine.
Or, the third way:
Write a game that runs natively on FreeBSD yourself.
Which brings me to last point I think I read somehow between the lines of your post:
Most new computer games suck.
I agree.
And it's getting worse.
I observe that for many years. I could write a
very long text about my ideas why's that so.
But, all I can say briefly is:
If FreeBSD provides more Windows/Steam games - which is almost completely in the hands of the ones writing the games, and which OS they support, than vice versa - this will not change anything.
Only writing better computer games can change that.
Or do what I do:
Play the old classics!
Before you ask you find a list of mine in
post #44, "which O.S. do you use ?"
But there are many more.