Great Simulations Inc. develops and markets business simulations that can be deployed in high schools to graduate courses in over a dozen countries. Based in Tucson, Ariz., the simulations allow the students to compete against each other in the management of a business and provide hands-on experience of practicing skills learned from textbooks and lectures. The simulations offered include Threshold Competitor, Threshold Entrepreneur and Merlin which offer team simulation, practice simulation and exam simulation for business classes and MBA programs.