Dan Dixon, escaped former This is Vegas producer now working on improving his galaxy and planet-smashing sim, Universe Sandbox, told me at PAX that he's working on a significant update to his terrific not-quite-a-game. He expects will be out next year.
A reader who was tired of my stories about L.A. Noire recently wondered why I hadn't written about Universe Sandbox. What's that? A simulation of the universe I can run on a Windows computer? And here I am at work on a Mac?