You only have one day to complete each puzzle. However, you may replay the day with the echoes of the past helping you complete the puzzle.
This release marks the end of the development project for Ludum Dare, as this is the submission release.
The windows binary is provided by Sim: http://www.ludumdare.com/compo/category/ld-28/?author_name=sim
I haven't tested it out, but I've heard good things. So if things go awry, its not my fault! Thanks Sim!