You can see what I play regularly via the Steam interfaces. I don't usually accept random friend invites, so save your time. If I know you in RL and you want to add me, tell me somewhere that it's you first or I'll likely reject it. If you're a friend of a friend, have them tell me, or you send me an IM explaining who you are, or whatever. Friends are not Pokémon, I don't have to catch 'em all.