Alive 4-ever

It is one of the bloodiest games. The small town has been hit by a mysterious deadly virus that has turned the population into zombies. It is your duty to survive, save those who survived and get the medicine for the virus cure. You will always have a lot of blood. Shoot the beasts and they will fall into red puddles and onto the meat. There is rotting corpses everywhere and walls and ceiling are covered in zombie guts. Graphics and effects are done well and there is a tension in the atmosphere. You can choose which characters have the start weapons and special skills.