Thank you everyone for your kind comments! We hope you enjoy
@kaiisen: Yes, the second game in the series, Umi o Wataru Kaze (The Wind that Spans the Sea), develops and improves on the gameplay of the first game, introducing new features such as deadlines for trading deals and a grid-based inventory system. They're not directly linked so you can play the second game before the first etc, but for this game we were able to use work from previous translation teams, (with their permission, of course!), which is part of the reason we were able to get this out so quickly! It felt very humbling to be able to finally be able to bring everyone's hard work into a playable patch.
There are also two (officially translated) VR games for the series which came out recently, but they're somewhat more 'VR animations' than games.