Crimson Sea pits you against an unknown enemy that hides in the shadows. Vibration, sound, movement, everything hints at a presence that is slowly approaching. Where are they? Where will they appear? Experience the tension and thrill of the hunt. Then suddenly they're here--all around you. Thousands, tens of thousands of alien creatures fill the screen. Fear tightens its grip as you fire off burst after burst until gradually fear changes to the excitement of prevailing against overwhelming odds. Fight for your life as you are surrounded by the hoards! A new and improved Group Control engine puts more than 1,000 enemies in your sights at once. Liquid aliens change shape as they attack. Watch as these enemies of unknown origin morph before your very eyes.