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Sorry to hear, mate
I'm okay if I'm not hung over; but the graphics are so good now, they can really trick your brain. Have you tried RTS games, like the Age of Empires/Command and conquer types?
They're lots of fun and not nauseating.

I was mainly into Assasins Creed and other RPGs. I liked AC because of the different historical settings of each release.

Yeah, that's going to churn your gut though. Branch out a bit into third person. Even top down RPG's can be fantastic. Have you looked at Path of Exile at all?
Completely free, just download to your PC and get cracking.