LEGO Mindstorms Robot Inventor (51515) was LEGO’s flagship programmable robotics kit for ages 10+, featuring the SPIKE Prime hub with Python and Scratch programming, 5 motors, multiple sensors, and over 5 pre-designed robot builds. Discontinued in 2022, Mindstorms Robot Inventor sold over one million units and is the most widely used introductory robotics platform in schools globally, establishing the benchmark for programmable toy robots.