Possibly 1990s. Two drifters/hustlers play two old eccentric millionaires at their mansion.
The millionaires win, and the hustlers (having lost all their money) have to build a fence for the millionaires.
They are kept more or less hostage in a hut until the work is done.
Eventually they attempt to escape and one or both of them die in the process.
One of the hustler's I remember as being Steve Buscemi-like.