I suspect there would be 4 endinds? first for normal playthrough, second in case you picked polypropylene at the start, third is mirror ome and last if you manage to get out never receiving silicone?
I believe there is a point in the game where you HAVE to receive silicone in order to be heavy enough to stand on a button. Now Nate may add a secret that (maybe?) adds another giant ball you can find to push onto it.
