The game developers decided that Al Pacino's current voice was "too old" for this 30-something character, so they gave him full control over his substitute instead, as a part of the "voice and likeness" agreement. This very same agreement also prevents Pacino from lending his voice or likeness to other film-based games, which is why he's not included in the cast of Le parrain (2006). André Sogliuzzo was handpicked from a vast selection of voice artists by Al Pacino himself, to be the voice of Tony Montana.
Tony's fortune at the start of the game (which he eventually loses) is $65,884,703, which is the same amount Scarface (1983) grossed worldwide at the box office (unadjusted for inflation).
The video game is an alternative version to the gangster film Scarface (1983), in which Tony Montana doesn't get killed in the mansion battle with Alejandro Sosa's killers.
The game holds the Guinness World Record of 'most swearing in a video game', with 5,688 f-words throughout its 31,000 lines.
The phone Tony use in the game, is a "Motorola DynaTAC" that is a famous phone back in the 80's.