This one is a hard shooter first-person for true gamers here on vitalitygames.com. Doom, about the exploits of space marines, designed to protect the planet and fight against hordes of demonic entities and insidious monsters. Use all available weapons and explosives, in sufficient quantity is available throughout the game. Shooter online dynamic and require the player to a maximum of movement and speed, observation and speed. Destroy everything that moves. Use whole arsenal of improvised to protect the planet from the spirit.