Just a game?
Dominion - Terramar
You just ask for a big ship and a star to guide it. And someone who knows how to bring it to fruition by following the stars. It seems that, in the end, you have managed to get hold of some of the rivers that you longed for and that end up in the sea. But they are dangerous waters, infested with pirates, through which you have to cautiously send ships full of rats to reach the distant ports, full of merchants, where you can start a lucrative business. First, you must take control of some islands, as a foothold: the natives seem friendly, judging by the cheers they emit when you approach and by the poisoned spears and darts they offer you before you are even close enough. as to accept them properly.
Then, you will take control of the ports. And from them, to look for more rivers. The day will come when all rivers belong to you.