Get a treasury of strategy and sim games from the master for multiple operating systems on Steam, here.

Our incredible bundle of games from legendary designer Sid Meier returns! Command the fate of the world in two decades worth of Sid Meier’s Civilization titles, including the latest entry Civilization VI—plus a wealth of expansions and add-on content that give you new civs and scenarios to play. Plunder the high seas of the modern classic Sid Meier’s Pirates!. Explore a career-spanning treasury games that’ll have you taking just one…more…turn…all night, and support the charity Trees, Water & People with your purchase!

You can always check out the most recent Humble Bundle offers here and here.