For minimum of $5.54(may change in future), you will get:
Primordia: steam (pc), windows, desura
Pressure: steam (pc), windows, desura
Forge: steam (pc)
Richard & Alice: windows, desura, greenlight
Gas Guzzlers: Combat Carnage: windows, desura, greenlight
and 1 mystery title.
Pay more than $8.49 to get the bonus album.
Just bought it. It was upto $6.