Thank you so much for all the kind words! I'm really happy to hear your level layouts work out well for you.
The pirate island has a hint inside the curio shop (home base area) - so you should already know the secret to the island or you won't be able to figure it out. It was meant to be a hard puzzle and it seems to have clicked for maybe 1/3 of players.
I won't make a longer version of this specific game but I do see myself probably making something else with this engine.