They are working on adding the feature into the engine. I don't think it is possible at the moment without coding it yourself.
edit: there is a save and load script but I don't have it, I wasn't aware of it until I came acrossed it in the store. I would wait until the feature came out though I mean save and loading could be the last thing you work on in your game, thats what I'm having to do with a lot of things atm like the menus.....
Markchapman10 is my Skype let's have some dev talk.
