Real time strategy games are pretty rare nowadays. Grey Goo is like Command and Conquer with aliens in space also goo.

Having put over 3k hours into this beast, you could say I'm devoted, but it's more of a love/hate thing. If you can put in the hours its worth it.

CS:GO is the pinnacle of the franchise that started modding and online shooters as a whole. Careful of the skin-hungry preteens though.