Not too long ago it was revealed that Batman: Arkham Knight, the trilogy-capper to Rocksteady's series staring the Caped Crusader, will be rated "M for Mature," a first for the traditionally "T-rated" series.
Now we know why.
According to a description by the ESRB, one particular scene is the culprit. Please note: SPOILERS AHEAD, so continue reading at your own risk. You have been warned.
This is an action-adventure game in which players primarily assume the role of Batman as he battles several villains spreading chaos across Gotham City. Players traverse a variety of locations around Gotham while battling thugs, examining crime scenes, and occasionally rescuing hostages. Players engage in melee-style combat using punches, kicks, and gadgets (e.g., batarangs, explosives). Enemies cry out in pain when struck, and some takedowns are highlighted by brief slow-motion effects and loud impact sounds. Some sequences allow players to use tank-like vehicles with machine gun turrets and rockets to shoot enemies; a vehicle's wheels are also used to torture an enemy in one sequence. Cutscenes depict characters getting shot (on and off camera) while restrained or unarmed. Large bloodstains/pools of blood appear in crime scenes and in the aftermath of violent acts; one room depicts a person torturing a character on a bloody operating table. During the course of the game, players can shoot unarmed characters and a hostage. Neon signs in a red-light district read "live nude girls" and "XXX." The words “b*tch,” “gobsh*te,” and “a*s” appear in the dialogue.
Batman: Arkham Knight is coming to PlayStation 4, Xbox One, and PC on June 2.