The Undergrounder is a fast paced action/puzzle game based on the hard life of millions of workers that every day have to use the underground to commute to work. The player plays the role of a worker that needs to travel around a city using the underground for his/her duties. Even if this could seem a simple and boring activity, there are a lot of hazards making things hard and challenging every day: underground faults and congestions, strikes, work rivals... Everything makes regular duties become challenges against the passing time.