Taken from the official website.

Enigma: Rising Tide is a groundbreaking concept melding cinematic pacing with immersive graphics to produce the world's first alternate history, naval warfare, vehicular shooter game in an online, persistent, action-packed, 3-D setting.

Command a variety of surface ships and submarines. Sail with and against thousands of other players, deploying deck guns, torpedoes, hedgehogs, and depth charges. Communicate with your teammates in encrypted chat channels, evade deadly torpedo aircraft, and pluck salvage from the wreckage of enemy vessels. Pit your destroyer against enemy wolfpacks, or stalk fat merchantmen from the murky depths.

Right from the beginning, you'll find Enigma: Rising Tide intuitive, easy to learn, and incredibly challenging. But when you join this world, we don't stop with the basic package. Every three months following release, you get free expansions to the game, including new vehicles, additional features, and dramatically enhanced gameplay.

You'll see as soon as you take the helm: It's a different world.