I've been out of PC gaming for at least 10 years. Although I have a PS4 and I loved playing God of War 4 and Witcher 3.

Through what might only be described as a mishap, I've ended up building a computer with a kickass GPU. 3700X, RX 5700XT, 2TB Gigabyte Aorus NVMe. The works.

Build's half done, I plan on dual booting hackintosh & windows 10 -- the latter I haven't used in many years as well, I'm a UNIX guy.

What should I even install on this thing? I've been very disconnected from the gaming industry and I've no idea what games are new or good or cool to show off what my hardware can do

Firaxis just announced a new addition to the XCOM series in the form of XCOM: Chimera Squad. It takes place 5 years after the events of XCOM 2 and focuses on a specific squad of named human and alien characters trying to maintain the peace in a one of the new cities.

Game Reveal Trailer

Gameplay Trailer

It's currently $10 on steam, presumably since it looks like it was built on the XCOM 2 engine. The sale lasts until May 1st, so you'll have time to wait until some reviews are out before you buy it.

I absolutely loved XCOM 2: War of the Chosen, so this is a nice surprise for me. Some of my friend who have played some of the older XCOMs are comparing it at least thematically to XCOM: Apocalypse

Edit:
@cwagner provided a link to GMG where its currently $9.50