Rare’s ambitious pirate game, Sea of Thieves, will take you beyond the ocean waters of previous demos. The developer showed off new footage today at Microsoft’s E3 press conference, featuring underwater exploration and a search for treasure on a tropical island.

In Sea of Thieves, players have to team up to keep their ships up and running. That includes readying the sails, steering the ship, and manning the cannons, in addition to on-shore exploration. Rare showed off the first gameplay last year, a video that showed off how quickly battles can lead to the end of your ship.

Post-swim, the footage today offered a look at treasure hunting across beaches and through caves. Even if you successfully locate your bounty, there’s a good chance you’ll have to fight to keep it from other players. Sea of Thieves will launch in early 2018.