Charles River Analytics presents its adaptive game-based environment for powerful, personalized training. The US Air Force is seeking more efficient and cost-effective tools for constructing game-based maintenance training. To address this challenge, Charles River developed Maintenance Training based on an Adaptive Game-Based Environment using a Pedagogic Interpretation Engine, or MAGPIE. MAGPIE combines an integrated suite of efficient content authoring tools, models of trainee skill and motivation, and a game adaptation engine to dynamically deliver game-based maintenance training that is responsive to individual learning needs, performance, and instructor guidance.