Humble Bundle is presenting the Yogscast Jingle Jam this year. They did it last year, and I managed to land a ton of neat games (and some not-so-neat games, I admit...) for only $35. Even better, all the proceeds go to charity - and one of the charities you can choose is Christ Centered Gamer!
Right now, the bundle includes Rust, Dungeon of the Endless, Q.U.B.E. Director's Cut and Garry's Mod. More games will be added every day until the 25th. Take note that they will run out of keys for some games as things progress, so the sooner you sign up, the more likely you will be able to get the whole shebang for one low price.
You can find out more by clicking here. And feel free to search the site for reviews of whatever games they add!