Settle the island: roll for resources, build roads, settlements and cities, and be the first to 10 victory points. For the full rules, see Catan.
This server plays the base game on the fixed beginner board for 2-4 players, with a few simplifications: trades go through the bank and ports only (no player-to-player trading), development cards are playable only after your dice roll, and games are capped at 200 dice rolls (highest score wins at the cap).
Optionally play with friends. Share the game url after creating a game to seat up to 3 human friends. The remaining seats are filled by ai bots (PIMCTS with random rollouts).