Walkthroughs for custom maps.

The Moon summons some incomprehensible boat. Could it be that summoning this unknown boat will make the map impassable? It's actually an interesting and very cunning idea – you play for ten months, and then you realize that you made a mistake in the first week))

Unlikely. I did exactly that, and I've already completed half the map, obtained a city portal, and two captain hats, and I haven't encountered that problem yet. :)

Added 1 minute ago
But you have to work hard with summoning the boat here.

Added 1 hour 22 minutes ago
It seems that the Moon creates the boat when it lands, as there are no free neutral boats on the map at first glance.