Great game, must have been lots of work. On my opinion it´s a bit blown up: There´re lots of rooms without any function, I made screenshots and painted notes on them with PS for easier navigation.
The size of the game made it hard for me to focus on the riddles and without a WT, no way: Did not find a clue for the cards in room C25, and I did not get why the values for the valves in room A17 were in reverse order ...
As well it irritated me, that 2 of the tree fireplaces to be lighted seemed to have no function, as well as the bowl in D12.
What I generally like is, that the if I grab the game-URL from the NG source code, I can play your games full-screen ;)