Now this one's simply unnecessary. The second mission pack of Grand Theft Auto consists of a prequel of a prequel, literally just showing the protagonists of London 1969 as their younger selves and as they enter the Cartwright family of crime that they would later work for in the future, and well, that's pretty much the only real difference besides this and the previous expansion. The map's the same, cars and weapons haven't changed a bit and the only thing that's different would be the addition of a multiplayer component and new missions.

These new missions are unbearably hard. Even if only a level, most of them are time-based and really tight to get by with considering the awful tank controls and the unpredictability of the traffic and police forces.