Everyone is playing by the same rules.
Nobody is playing with the same map.

You can only travel to places you know exist. Standing somewhere new is how you learn — and what you learn, you keep.

How far you can see is horizon. It is the only thing here that buys anything, and it gets more expensive every ten rounds.

You can give horizon away. It does not come back.

People will offer you money before they mention the terms. Take it or do not. Both are a decision, and the game is keeping a record of which one you made.