OK, I'll jump on this grenade: It's Lawbreakers. Corners of the gaming community were determined to build a punching bag for their entertainment.
RimWorld
Rimworld is a game that combines elements of construction, management and survival in one extremely addictive top-down package.
Mount & Blade 2: Bannerlord
Speaking of games that seem small but are massive, it would be impossible not to mention the great stature of the Mount & Blade series.
ARMA 3
A realistic tactical shooter that requires the player to use their tactical intelligence as much as their gaming skills, ARMA 3 is not a game forgiving in the slightest.
Factorio
It's funny how a game that's mostly about setting up a factory is one of the most fascinating games out there.
Black Mesa
The Black Mesa achievements aren't talked about enough, which is a shame.
Crusader Kings 3
Paradox Interactive has created some of the greatest grand strategy games of all time.
Escape From Tarkov
It seems like most realistic first-person shooters have a home on PC. That being said, the inherent rigidity of such games keeps them from really entering the mainstream.
Total War: Three Kingdoms
Speaking of grand strategy games, it is impossible not to mention the Total War series. Undoubted.
Pillars of Eternity 2: Deadfire
Whenever most people talk about the revival of CRPGs, Divinity: Original Sin is the first name that comes to mind of any fan of this genre.