With 4 players, you must operate your ship. Some beings are not pleased with your stay. You need to change your communication settings in ship.
You can venture on open seas. Your goal < if you choose to accept it> is reaching to the islands. Be careful on the islands. There are more monsters waiting for your arrival.
Find worthy items for The Collector. He collects your items. If you don’t gather enough, he will collect you. Dodge your enemies and loot. Work fast, time is the key even in the purgatory.
Each island is different. They are waiting for you. Some of them are a casino, some of them are a prison. But the best thing known is that you won't see the last island.