Biff and his descendants appear in the episodic video game by Telltale Games, Back to the Future: The Game, voiced by Kid Beyond. In the first episode, Biff appears during a sale of Doc Brown's belongings, where Marty prevents him from discovering Brown's notes about time travel. Afterwards, the DeLorean appears and Marty travels back to 1931, where Biff's father, Irving "Kid" Tannen, is head of a mafia gang running various alcohol smuggling operations during the prohibition. When one of his illegal speakeasies is destroyed, articles in the future suggest that Kid kills Doc Brown for the act, forcing Marty to break him out. In the process, Marty delivers a subpoena to his grandfather and one of Kid's employees, Arthur McFly, which puts Marty's existence in jeopardy at the end of the episode 1. In the second episode, after Marty saves his Grandfather, he finds that his actions meant nobody testified against Kid Tannen, resulting in the Tannens becoming the fifth-biggest crime family in California, headed by an aged Kid. Marty returns to 1931 and convinces Tannen's moll Trixie Trotter and Officer Danny Parker (Jennifer Parker's grandfather) to indict Tannen. However, because the young Doc helped apprehend Tannen, he unintentionally won the heart of crusading reporter Edna Strickland, which results in an alternate 1986 where Doc rules over an Orwellian dystopia as "First Citizen Brown". In this timeline, Biff is the first subject of the Citizen Plus Program, an initiative which uses aversion therapy to render the subject unable to even think about immoral behavior, as well as turning Biff a brainwashed puppet for Edna Brown to use as muscle for dirtier dealings. After Marty helps break the brainwashing, an enraged Biff tries to attack Marty, but Marty (with Einstein's help) knocks Biff out and escapes.
Read more about this topic: Biff Tannen