itch.io

I tried that, but it says that the link is either expired or I don't have permission to join.

I played through the entire game and finished every optional puzzle except for the very last one (the one with six groups of numbered tiles in a huge, underground room).  I couldn't make heads or tails of what it was even asking.  

Is there a hint anywhere in the game or can anyone here give me a pointer?

My old man brain was sore by the end.

Pros: Classic Zelda-style gameplay.  Good difficulty progression.  Cool art style.

Cons: Slow-paced.  Way too much backtracking.