To those not having played/finished it yet: it IS a pretty nifty game, if a bit lacking in the... literary department.
Some parts are outright infuriating though - not gonna spoil it but you'll probably find out soon enough if you give it a go. If you find yourself stuck, there's a walkthrough on the Nooskewl website that can save your sanity.
PS: Also, ITS, not IT'S. And "open source source".