Steam started out as an annoying program that came with Half-Life 2, but it’s grown into the PC game store of choice for most PC gamers. Although some people aren’t fans and prefer alternative stores, it’s a powerful platform that offers a lot of features. Even if you’re a Steam fan, there’s likely a lot you don’t know about Steam. Steam is constantly gaining new features. We’ll be seeing a Linux-based “Steam Box” challenging the consoles in the living room this year, too.