Screwball: The Mad, Mad, Mad Game

Every player or 'Boob' is in the "MADvertising business" on MADison Avenue. He drives his Jokeswagon along the path, collecting "clients" and slogans. Meanwhile he spends his Mad Money.

First Boob to lose all his Mad Money ends the game and he is the winner.... Unless... the richest of the remaining players holds in his hand the "Madly Rich" slogan - this player is then declared the winner.

Supposedly this game was at the center of a Mad Magazine lawsuit which Transogram lost. I haven't been able to find anything substantiating this.