A world with a lush strip of land, but the rest of the world is uninhabitable, and there are too many people.

A planet of luxury, except you can't leave and it will fall into the sun in 26 years.

A tiny moonlet with vast wealth, except you're the only person on it and there's no way to communicate with anyone.

A giant, bountiful world, where your ship has crash landed and everything wants to eat you.