No Man's Sky is actually pretty fun despite the failed launch. No cities but infinite planets to explore and creatures to look at. Great to play while blazed.

Elite dangerous is also not to bad. Starfield next yeah looks amazing so keep your eye out for that

I wish Elite had some sidekicks to chose from. It gets lonely out there.

second this

Chorus is a good one

word

Have you played Mass Effect? An excellent series of games with that futuristic sci-fi vibe

I cam here to say this. Specifically, the first one - in terms world building and lore, it is an A-class game.

Starfield soon!!!!

Watch Dogs Legion has a very cool London if you dont't mind your future on the dystopic side.

Mass Effect Legendary edition is possibly one of the best Sci Fi expanses in gaming history. Also one of the few games that can actually pull at your heart strings and gives choices that you feel the outcome depending on which way you went.

2nd best Sci Fi game by far on Xbox is Stellaris, steep learning curve but an insanely satisfying game.
On pc I've put over a thousand hours into Stellaris, customisation of your 'Race' has hundreds of possibilities.
Along with hundreds of Random events in each play through, making each go unique.

Finally give Xcom 2 and it's DLCs a go, awesome gameplay, very futuristic.
You can customise your Soldiers to look like anyone, friend of mine made himself then the rest of the squad the A-Team 😂