Steam does really good job in publishing indie games which would otherwise see no sun (or even moon).
The most recent indie game which I discovered gives unique opportunity to be engaged in a space adventure. The atmosphere reminds of Star Control series, although the most exciting parts of the game are of the management nature, and not of arcade. Meet Faster Than Light (FTL).
The video below is one of the random episodes of Northernlion plays [something]. Enjoy!