Sprite
Xeno
1
Yako
3
Zabo
4
Jupiter is one of the more interesting optional planets to explore. There are actually two separate landmasses to land on. The western one wraps around in a north-south manner, while the eastern is a large island continent.
On the western continent, you can find Jupiter Village on the northwest peninsula and Jupiter Dungeon some ways south of that. (There are Frigates in Jupiter Village, but you can't sail them to the world map, so they won't help you get to the island continent.)
The island continent holds a Tower for you to explore. You will either have to re-launch your Rocket to explore both continents, or wait until a Frigate appears on the world map and Board it.
On the western continent, you can find Jupiter Village on the northwest peninsula and Jupiter Dungeon some ways south of that. (There are Frigates in Jupiter Village, but you can't sail them to the world map, so they won't help you get to the island continent.)
The island continent holds a Tower for you to explore. You will either have to re-launch your Rocket to explore both continents, or wait until a Frigate appears on the world map and Board it.