http://blinkbundle.com/

For a minimum payment of $1.99 you get:

* SOL: Exodus (Steam)
* 1000 Amps(Steam)
* Escape Goat (Steam) (+Soundtrack)
?? Bonus Game to unlock later ???

For a minimum payment of $4.99 you also get:

* Supreme Ruler: Cold War (Steam)
* Steam Bandits: Outpost (Explorer's Equipment Pack) (Steam)
* Demolition Inc. (Steam)
* [url=http://store.steampowered.com/app/293180/ ]Overcast - Walden and the Werewolf [/url](Steam)
* Space Giraffe (Steam)
* The Undergarden
* Jagged Alliance 1: Gold Edition

The Undergarden unlocked at tier 2

Steam only?. Pass again...

And Jagged Alliance 1: Gold Edition as the second tier 2 secret game.... god knows why they just don't show all games at once.

I remember one of the staff explaining on Reddit that it was to give them a chance to advertise the bundle more. They don't have a store or multiple bundles at once so the chance to bring in more people each time a mystery game is released is seen as the best option for them.