The Lameness Trainer is a free, interactive online game teaching equine lameness assessment. Thousands of people use it every year and it is now used for teaching in veterinary schools around the world. The Lameness Trainer was created in 2014 by Sandra Starke, Gregory Miles and Stephen May from the Royal Veterinary College (UK), at its conception kindly funded by the Eranda Foundation. It is based on decades worth of published research into the biomechanics of equine lameness and now even features in Adams and Stashak’s Lameness in Horses! We rely on community donations to support the development and hosting of this resource