Steam Games

[Therapy]

Just recently got steam and am looking for cool games. I already have TF2 and am going to get GMOD, soon to also get CS:GO. I would like to know some good free games, along with some games that are a must have (You pay for) that are good.

 

[Worry]

A game you missed is H1Z1. It's great. I love CSGO.