Just prior to the Summer sale, Valve released Team Fortress as free to play! Personally, I haven't played it since they started the store for the silly looking hats.
Minecraft 1.7 is out now! This is the "piston update". Pistons have been added and require a few crafted items to build.
Halfbot's in a bit of a bind. They created a game, and readied it for release in Apple's app store, only to find out someone had ripped it off, and started selling the exact game with the exact same name, but under their own brand.
GoG.com is a pretty good source for older, yet enjoyable PC games. Copyright protection is removed from the games before GoG will sell them...usually. Motoracer 2 is having some problems related to this.