Modular Robotics MOSS Exofabulatronixx 5200 Model Kit Pilot your robot using the included Double Brain Block that connects to iOS and Android devices via Bluetooth. There is a universe of robotic possibilities waiting when you play with MOSS, so go crazy and let your imagination guide your creation! Use the steel spheres to create simple motion primitives. Combining joints, hinges and rigid construction yields wonderful kinematic creations. The MOSS Exofabulatronixx 5200 includes 52 MOSS blocks and 140 Carbon Steel Spheres that combine to build thousands and thousands of robots!