Capcom hasn’t revealed too many of the monsters in Resident Evil: Revelations. Most of the screenshots show the Ooze, a new type of B.O.W. players have to fight in the Nintendo 3DS game. The most basic variant lunges towards players and chows on their shoulder if they get too close.
A scene where a character is sliced with a chainsaw suggests players will fight some kind of monster wielding a chainsaw and the ESRB specifically mentions zombies. However, they might have clumped B.O.W.s like the Ooze into the "zombie" category. An earlier rating for Resident Evil: The Mercenaries 3D mentions attacking zombies and mutated creatures. However, in the ESRB rating for Resident Evil 5: Gold Edition, the ESRB says "players kill humanoid monsters – they are zombie-like and infected with a parasite" referring to the Majini.
This is a third-person shooter in which players assume the role of two counter-terrorism operatives attempting to stop a bio-terrorist plot. Players use handguns, rifles, machine guns, and rocket launchers to kill hordes of zombies and mutated creatures. Battles are highlighted by screams of pain and realistic gunfire; enemies collapse to the ground when killed, dissolving into pools of blood and chunks of flesh. Blood-splatter effects occur when humans or zombies are attacked, and some characters are depicted with exposed organs/viscera. In one level, a human character is seen getting sliced by a chainsaw as she struggles in the air; in another, a corpse with a mutilated face is depicted hanging against a wall. The word “sh*t” appears in the dialogue.