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Bundle Stars has the Tropico 4 Collectors Bundle on sale for $5.99.
Includes:
Tropico 4: Steam Special Edition
Tropico 4: Junta Military DLC
Tropico 4: Plantador DLC
Tropico 4: Quick-dry Cement DLC
Tropico 4: Apocalypse DLC
Tropico 4: Megalopolis DLC
Tropico 4: Modern Times DLC
Tropico 4: Pirate Heaven DLC
Tropico 4: Propaganda! DLC
Tropico 4: The Academy DLC
Tropico 4: Vigilante DLC
Tropico 4: Voodoo DLC
All activate on Steam.