Blizzard has made its classic Super Nintendo adventure game, The Lost Vikings, available as a free download (thanks Joystiq). It was one of the first games the company made (which was published by Interplay, long before it was known for creating Warcraft, Starcraft, Diablo, and World of Warcraft. In the game players take control of three Vikings and alternate between them to use their special skills to solve environmental puzzles.
You can find out more about the game, and where to download it, by visiting Battle.net. You can also download the classic games Rock N' Roll Racing and Blackthorne!