Beneath a Steel Sky (classic point & click adventure, it's been freeware for a few years now)
Also, get on Steam, vote on the community choices and sell the reward cards. Save enough and buy something.
League of Legends, Dota 2 and World of Tanks. The first two are not noob frieldly, they require a significant time investment to become a decent player. The latter is much easier as it's basically a shooter with tanks.
LoL is designed for noobs!![]()
I don't really understand how levels work on Steam, but you need to have a level 8 account to receive those rewards for voting. (I'm level 2, so don't get them)