The Vapor Trail Bundle is the latest collection of great titles from Indie Royale. There are six featured games: PixelJunk(TM) Shooter, Gun Monkeys, Megabyte Punch, Stronghold HD, Ride 'em Low and Hexcells. There's also a bonus chiptune album, Goldbach Conjecture, from Brian Peters for those who beat the bonus target price.
All the games in The Vapor Trail Bundle are available for Windows via Desura & Steam except Hexcells which has been Greenlit for Steam. Four of the games are also available on Mac and three on Linux.