I'm disappointed that none of the devs of games in HIBs have open-sourced their games since the first one. It was always fun to have a glimpse at the code. I guess the Lugaru source fiasco[0] may have discouraged other devs from open-sourcing their games.
It's also a bit odd that Indie Game: The Movie shows up as a game on Steam. I'm somewhat surprised that Valve hasn't properly expanded into the video/music space given that they sell both movies and soundtracks (to games) on Steam.
[0]http://blog.wolfire.com/2011/02/Counterfeit-Lugaru-on-Apple-...