I thought that Steam had a feature in which it automatically saved your progress to the cloud (correct me if I'm wrong). Is this automatic or do you need to opt-in somehow? I have a new MacBook Pro and I have several games I've been playing on other Macs and PCs via Steam. It doesn't seem like any of my old campaigns/save files are appearing when I download my games on the new computer. Do these not tend to work cross-platform? Is there a place I can see a list of games that support it and that don't? Especially a cross-platform list? Thanks for any explanation about this feature.