In the United States, during the 1920s, the Volstead Act forbids the manufacturing and sale of alcohol. Nevertheless, prohibition is going to represent a gold mine for smugglers who dare to challenge the authorities. From the hooligan to the respected politician, many people have tried their luck on this lucrative market, yet it remains a dangerous activity since the agents of the prohibition — the Prohis — roam around...

In Prohis, each player embodies a smuggler who tries to make a fortune by transporting illegal goods — a highly precarious activity since the other players have the opportunity to check your cargo or even seize it if they find suspicious items.