Just found an awesome way to duplicate your save for mac. This allows you to have the same save on 2 loads. However, this does not let you exit and it save to both, when you do this it save the current spot unless you work on it more. So, heres how you do it. Go to finder, hit command+shit+g and copy and paste this "~/Library/Application Support/unity.Raft.Raft/SavedGames" Then click on the save you want to duplicate (ex: rip.rgd) only click once though, dont open. Hit command+c then hit command+v. That's it, have fun with your second raft world