Dr. Freeman, I presume

They're very up to date, the ones that are maintained. FreeBSD has quarterly and latest repos, though. If you want the very latest, use latest, if you want more stable, quarterly updates, use quarterly. You can use https://wiki.freebsd.org/Ports/QuarterlyBranch for guidance on how to switch.

Fortnite will probably never work on Linux. (And to me that's a good thing lmao) But I know Overwatch works perfectly fine at least.

I'll probably have to go with FreeBSD for their minimal base and incredibly clean and well-documented code and utilities.