Final answer:
To guarantee a game to be classified as Mature rather than Teen under the ESRB system, it would need to include intense or graphic violence, mild language, and tobacco references.
Step-by-step explanation:
The Entertainment Software Rating Board (ESRB) classifies video games into different age categories based on their content. For a game to be classified as Mature rather than Teen, it would typically contain violence that is more intense or graphic, such as realistic depictions of blood or gore. Other factors that could contribute to a Mature rating include mild language and tobacco references.
Learn more about ESRB system and game ratings