The Rockstar game Manhunt contains a character called Piggsy, who has a chainsaw as his weapon, that might be loosely based on The Texas Chainsaw Massacre.
In Zero’s shop in San Andreas, you can see the game Manhunt in the shelves, and for some reason some believes this is a reference to Leatherface, and that Leatherface is actually in the game of Grand Theft Auto San Andreas.
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