Hey! I made a finnish version of Grandpa's mansion!
Really poorly made custom story. Really questionable design choices by having keys that open pointless rooms, something about this feels rushed/unfinished. Onto the cellar area, wtf? You activate two buttons, that do absolutely nothing, you gain a sanity bonus but nothing happens, the gate remains locked, so I barrel clipped through to try and progress more, but hit another dead end moments later, as you use a key to enter yet another pointless room? Unless the item required is well hidden within the water or something, just a really poorly made story.