Having played quite a bit of these sailing games during jams over the years, and none of them has come even close to the sailing mechanics of this game. Gosh, upwind sailing and all. And everything feeling so polished and smooth about the movement.
The game is a bit light around the sailing though but I think its superb implementation makes up for it.
I think there could be potential for this game if you add more meat around the bones after the jam!