anyway, gmod. you can't not own gmod if you own steam.
skyrim(for the mods and workshop stuff)
well, sure. but since it's free to play now
Get CSGO if you'll actually put time and patience into learning how to master a game
if you dont run into the servers that have starfishs and hackers
I think the base game alone will keep you entertained for countless hours.Do yourself a favor and at least play Half Life 2. TF2 is also my favorite game of all time.