The game is here check it out its pretty fun https://scratch.mit.edu/projects/843162693
Oh and I found this duplication glitch and its really easy unless your doing it with blocks then you'll have to be really fast to break it before the cloud update. So anyways its hard to explain but you have to place a item wait a second it takes a little bit to load and instantly when it loads break it then the other person (or you in a different tab) has to grab it the second they see it and then you have to break it after they broke it so now you haven't gave the cloud enough time to update and duplicated the item too. You can do this as many times as you want but everybody is probably gonna call you an exploiter. I would not recommend doing this because it goes against what Griffpatch would have wanted you to do and will make him really really sad