Heya, I have added hints to the demo scenario but it will require restarting the scenario (exit > start).
Here are the hints I added:
Spoilers Warning
What’s with those posters?
Each poster has 2 pictures, there is a single letter difference amongst them.
If you have not opened the cage
What is the cage lock "afraid" of? Try giving it what it wants. If that doesn't work on the lock, try on something else the lock is *connected* to.
Opened the cage but cannot free the bird?
The bird will only fly off to a melodious voice! Find the song.
Freed the bird but still stuck?
The bird was sitting on something precious. Look at the bototm of the cage.
Music Sheet
the song uses notes (A, B, C, D, ...) which are also letters. What else in this house produces a single letter times 5.
Candles
There are 4 candles spread across the house. Collect all shadows.
I have found all candles, now what?
Re-arrange the pictures of the shadows to find the secret. Remember that you can drag & drop photos onto the room (see the documentation for details).
Fishtank Empty
The water valve is hidden in the closet. You'll need to pull it.
Fishtank Pipe is frozen
You need to shine a concentrated ray of light to unfreeze it!
The spider won’t budge
The spider is out of reach, how could you reach that far with what's in your inventory?
Found all Secret Button Clues?
The secret button is hidden. Combine the 4 clues (spider, bird, duck, candles) to find it's secret location and "touch" it.