7 hours and 30 minutes left to grab this deal!
You can get the Cities in Motion Collection for $12.49 (75% off) in Steam, and the game is compatible with both Windows and Mac OS X. I already own this game, and it is very enjoyable, if you like simulations.
Cities in Motion (Base Game)
DLC content:
Design Classics
Design Dreams
Design Marvels
Design Now
German Cities
Metro Stations
Paris
St. Petersburg
Tokyo
Ulm
US Cities
Done! Cheers :)