An 18xx game without tiles, tracks and trains?

Poseidon belongs to the 18xx family of games even though it's not playing in the same century. Two to five players act as leaders of different peoples and command them to explore, send out fleets, build trading posts, and generate the highest possible profit. Poseidon contains most of the basics of 18xx games and, due to the relatively short running time of two hours, it is as suitable for 18xx-newbies who want to explore this wonderful world as it is for experienced train gamers.