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The Humble Flash Bundle called Surprise Attack is live for about another 1.5 days.
Pay what you want ($1 min for Steam keys) for:
Critical Mass
Party of Sin
Postmortem: One Must Die (Exten
Zombie Tycoon 2: Brainhov’s Revenge
Pay $7 or more for:
OTTTD
Megabyte Punch
All titles activate on Steam.