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The Humble Weekly Bundle is called Retroism.
Pay what you want ($1 min for Steam keys) for:
Nam
F-117A Nighthawk Stealth Fighter 2.0
Command H.Q.
Sid Meier’s Pirates! Gold Plus (Classic)
Pay $5 minimum for above plus:
Sid Meier’s Covert Action (Classic)
Sword of the Samurai
All titles activate on Steam.