Graytech Operations Management Simulation is an educational videogame that teaches the fundamental principles of operations management. It was coded from scratch in Java and is playable as an executable jar file. Designing the game required creating a business case, designing a production process, and turning that process into a playable program. The simulation serves as a simplified version of what the player will face in their professional careers, giving them a solid way to practice and experiment with introductory operations management principles in a low pressure setting. The game puts the player in charge of a simple factory floor. The player controls direct materials ordering, manages the capacities of each process, and identifies and responds to changing bottlenecks, all while managing limited financial resources. Using the principles and strategies taught in their introductory supply chain courses, the player will attempt to maximize profits by manipulating the production system. Through playing this simulation, the player will gain a higher understanding of operations management principles while also having fun in the process. The finished game, supplementary tutorial videos, and source code can be freely accessed online at www.graytechsimulation.wixsite.com/download.