Topsoe Plant Manager is all about making the smart choices that keep ammonia production high and downtime low – while never compromising on safety, in a Haldor Topsoe designed ammonia plant. To win, you have to solve the triple challenge of: * Choosing the right catalyst for the job * Keeping downtime to a minimum * Staying safe! The player with the highest score wins – and you’ll find an updated list of top scorers in the game under the menu high score.