I've been playing version .7 and I can't seem to unlock the Christmas event. Do I have to do a certain thing to trigger it? I've tried mostly everything I can think of. Also do I have to have version .6 to play the Halloween event?
In the main menu, click "Start". And choose an event.
Yes, version 0.6 includes Halloween. In version 0.7 it's Christmas, but there is no Halloween.