Gaming
The episode will follow Luis Lopez, an assistant to nightclub boss Tony Prince (Gay Tony) and part-time hoodlum who runs into trouble when his working and private life collide.
Rockstar North co-founder Sam Houser said: "The team at Rockstar North have yet again surpassed themselves, and made something that is both epic and very innovative.
"This episode's focus on high-end night life contrasts with the biker gangs portrayed in The Lost and Damned, while giving us a lot of new gameplay possibilities."
A retail disc titled Grand Theft Auto: Episodes From Liberty City will be released at the same time, offering both The Lost And Damned and The Ballad Of Gay Tony without the need for the original Grand Theft Auto IV.
The episode, priced at 1600 Microsoft Points (£12), will be released at the end of the year.
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