Before someone ask. The name of the stretch goal is now Game Master mode instead of Dungeon Master because of trademark.
The post from Swen on KS comments
It turns out that Dungeon Master is trademarked by Wizards of the Coast and so we can't use that name - we didn't realize that when we announced the stretch goals so we had to change it. The updates can't be modified once you posted them, so that explains the mismatch.
