Your task in this fun addictive puzzler is to control railway traffic without crashing any trains. Use YOUR MOUSE to stop and start the trains at the control square spots by clicking on the squares on the railway. Red square stops the train. Green square starts the train. Blue square switches the tracks for the train. For each train you successfully let off the map you get 100 points. For each time you use control square you lose 10 points. Have fun!