I was wondering if I could get hints available on the biscuit escape game. I have been stuck for a while.

Lightweight Escape Room and Point-and-Click Adventures Simulator - play, create, share · By
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
Each poster has 2 pictures, there is a single letter difference amongst them.
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.
The bird will only fly off to a melodious voice! Find the song.
The bird was sitting on something precious. Look at the bototm of the cage.
the song uses notes (A, B, C, D, ...) which are also letters. What else in this house produces a single letter times 5.
There are 4 candles spread across the house. Collect all shadows.
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).
The water valve is hidden in the closet. You'll need to pull it.
You need to shine a concentrated ray of light to unfreeze it!
The spider is out of reach, how could you reach that far with what's in your inventory?
The secret button is hidden. Combine the 4 clues (spider, bird, duck, candles) to find it's secret location and "touch" it.