In 2016 I worked as a 3D artist for a San Marcos, Texas based company called GameTime. They specialize in making play structures that are safe for kids and follow park regulations. In real life, all of these are based on the same internal structure for ease of transport and installation, regardless of style. It was called the Universal Frame and it was sold by GameTime for many years all over the world. Before appearing online, these very renders were used by workers to style the real world play structures.