Blood & gore: There is a moderate amount of blood in this game, mostly in the form of splattering/puffs when your character or enemies are shot. Also, blood lingers in puddles and stains the characters' clothes. However, it can be turned off at the title screen, under options, which will disable it for gameplay and cutscenes, but some static blood on floors and walls will remain.

Specific scenes of blood & gore:

A very early scene shows the aftermath of a gun fight, with several dead enemy soldiers lying on the ground with their blood smeared on the floor.

In one scene Snake (the main character) happens upon a beaten hostage with what appears to be a broken arm, tied and pinned to a wall of trip wire explosives. After Snake defeats the hostage's captor (Revolver Ocelot), an unknown assailant cuts off the captor's arm, resulting in the limb falling to the floor. You then see what remains of his limb with the bone, arteries and muscle showing. Blood then spurts and sprays from the wound. Later in the same scene the hostage also has a violent heart attack, leading to his death.

Snake approaches a door with a window that shows a long narrow hallway. As he looks through this window, an enemy soldier's head hits the other side of the window abruptly and violently. The soldier's body then slumps down as his blood streaks the window. You then see what appears to be a ninja (Gray Fox) as he take down over half a dozen soldiers. At first Gray Fox flings the enemy into walls, resulting in the soldiers' bodies making crater marks in the walls, while they too slump to the floor smearing blood as they go. Gray Fox then knocks another soldier into the air and cuts him in half through the waist, with blood spraying from both severed sides. After this he blocks an enemy's attack by grabbing his arm and breaking it, and then slashes the soldier's chest, resulting in blood spraying from the wound. The ninja kills the last soldier by picking him up with his sword, holding him over his head, and skewering the soldier through. To finish him, Gray Fox flings him over his shoulder to a wall, where the body hits and falls to the floor. Gray Fox then approaches Otacon (scientist and a main character); apparently to kill him, too. Before he can, Snake shoots at Gray Fox. Gray Fox blocks the bullet by cutting it in half. As the two halves fly, one grazes the Otacon, making him wet himself in fear.

Snake and Meryl (main female character) come upon an unbeknownst sniper (Sniper Wolf). Sniper Wolf aims and shoots Meryl in both of her knees and an arm. You hear her bones fracture as the bullets penetrate. You also see and hear the wounds spurt blood. She falls to the floor, as her blood soaks the ground. After you defeat Sniper Wolf, you must not have done a very good job because she and her men capture you immediately after. She proceeds to scratch Snake's cheek with her fingernails, resulting in the wound shedding some blood. She then says she now has him marked for later killing.