Will there be multiplayer? Probably not.
Will there be multiplayer? MoonQuest was designed as a single-player game, and ultimately a lot of decisions I make are centred around that.
Will there be multiplayer? There are no plans for multiplayer. There are some great multiplayer games out there that have a similar style and so I encourage you to play them.
Will there be multiplayer? Maybe one day.
Will there be multiplayer? It's not completely out of the question. I'm not sure what form it would take (couch co-op, online, co-op assist).
Will there be multiplayer? Believe me, I'd love to wander around the MoonQuest universe with a friend. But on the flip side, I think I can add much more interesting content and mechanisms if the game is single-player only.
Will there be multiplayer? You either get house-legs or multiplayer. Make your choice.