Demo Created - Sub RealI've just packaged up a tutorial which includes one of the levels and the tutorial. I'd be really grateful if you could try it and tell me if there any major bugs that I've failed to notice in it.
Download it here: http://media.pyweek.org/dl/12/john2/timetravel.tar.gz
P.S. Don't press "S". If you do, don't say I didn't warn you!