If you pre-ordered Tropico 4 on Green Man Gaming (GMG) expecting to activate your game on Steam, please read this thread at the GMG forums. Apparently they made a mistake and the game would not activate with the bonuses they want so currently the game is Capsule ONLY. So no Steam. If you would prefer the Steam edition, you can ask for a refund. It sounds like an honest mistake but it’s definitely a good reason for a refund.