Recommends Games for PC

Grand theft auto V - So many mods that give you hours of play time. (I'm currently playing LSPDFR - really enjoying it)
Garry's Mod - Again, so many hours of gameplay. Anywhere from darkRP to starwarsRP. There are a lot of great communities to explore in Gmod.
Arma 3 - I only just got into it but i am really enjoying Altis life RP. A lot of fun RP to have there if you enjoy that type of thing.
CS:GO - You have most likely already played this but you can have so much fun with a team of mates on competitive.