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Bundle Stars has the Big Sims bundle on sale for $4.79.
Includes:
Professional Farmer 2014
Woodcutter Simulator 2013 Gold Edition
Airport Simulator 2014
Warehouse and Logistics Simulator
Towtruck Simulator 2015
Skyscraper Simulator
Agricultural Simulator: Historical Farming
Bridge It (Plus)
Trainz: Murchison 2
Trainz: Classic Cabon City
Trainz: Settle & Carlisle
Roller Coaster Rampage
All titles activate on Steam.