Waterstorm is a 2D multiplayer submarine shooter with a variety of different ships and high-tech weapons you can choose from. Players from around the world can fight against each other in amazing underwater scenarios. Four game modes are available: Deathmatch (FFA), Team Deathmatch, Drone Match and Capture the Flag.
In order to play the game, users have to register an account. Basically, there are two account types: Free Account and Supporter Account. When registering, first a Free Account is provided, but when paying a small free (the user can decide how much s/he wants to give), the account is upgraded to the Supporter Account which features a lot of extras and helps the developers to maintain the game.