This document introduces games and simulations as learning technology tools. It defines games and simulations, discusses their history and genres. The document outlines why games and simulations are useful learning tools, highlighting attributes like being social, problem-solving, and experiential. It also presents leading tools for creating games and simulations and considerations for designing, developing, implementing, and integrating them into curriculums. The document concludes that games are still evolving as learning environments and can be effective when designed based on learning theory and research to create immersive worlds where social learning occurs.