Here are examples.

Einhander
https://www.youtube.com/watch?v=6AldIERbaoE

X-Com Apocalypse
https://www.youtube.com/watch?v=Miho2Db2wWM

Can anyone point me in the direction of games with soundtracks like these, for any system or pc?

Einhander (https://www.youtube.com/watch?v=7hJbe7YXsLU)'s soundtrack is amazing, but I don't know what to tell you beyond checking the composer's discographies. There are plenty of non-game related albums out there with a similar vibe. Orbital is a little soft compared to these, but they're one band I've always enjoyed for similar reasons.

I'll check out orbital.