This another crazy bundle like the THQ one.

Pay what you want ($1 minimum for Steam Keys) and get: (this tier comes as 1 key)

Saints Row: The Third
Saints Row 2
Risen 2: Dark Waters
Sacred 2 Gold

Beat the BTA and also get: (comes as 1 key)

Dead Island
SR3 The Full Package

Pay $25 or more and also receive Dead Island Riptide.
Humble Deep Silver Bundle (pay what you want and help charity)