Games with good communities to socialize?

Basically what the titles says, i'm used to play alone but i've realized that i don't socialize in any way and i think that's doing me harm so now i'm looking for videogames that have nice communities to integrate. I'm not looking for anything competitive, just casual.

PD: I'm from Argentina but i would like to meet people in this games that are from the united states because i would like to practice more the language.