⇒ The setting of Treasure Planet is very science fiction, but don't let that fool you into thinking it's technologically advanced. The designers said, "what if humans reached a certain level of technology, then went a different direction (solar power) instead of electricity?" With this in mind, they implemented what they call the 70/30 rule: everything is presented as 70% traditional, 30% technology. It gives the world a very steampunk-esque look to it. This means while they have solar powered wind surfers, there are no microwaves. Hologram lockets, but no televisions.

⇒ Montressor is a predominantly rock planet that was originally inhabited for its mining industry. In the last decade or so, the industry has started to go bad and many of the inhabitants have left for greener pastures.

⇒ As a mining planet, there's very little in the way of foliage on Montressor. And even less when it comes to large bodies of water. The planet itself is very gloomy and overcast 90% of the time with very few bright days.

⇒ The Etherium itself is not technically "space" as we know it. It's described as a space with oxygen and water-like qualities.

⇒ Their galaxy is an empire ruled by a queen. It's set to be very similar to old-world England with the Queen's Navy and such. The main industry is in shipping, be it minerals, textiles, etc.

⇒ There are almost no humans left on Montressor, particularly in Benbow village. If you watch the Benbow scenes closely, you'll notice there are no other humans there besides Jim and Sarah. Most, if not all of them, have left the planet. Jim's not seen so many humans in one place before in his life. So don't be surprised if he stares a lot.