Build it! and Ride it! with the K'NEX Thrill Rides Space Invasion Roller Coaster with the K'NEX Ride It! app. Experience K'NEX Thrill Rides in a whole new way with this space themed coaster perfect for boys or girls ages 7 and older. Build the Space Invasion toy roller coaster with the included 438 K'NEX parts and pieces including coaster track, roller coaster car, motor and themed graphics! The rods and connectors click together to create a 3D configuration and a coaster that stands over 2 feet tall. The Space Invasion Roller Coaster has a battery-powered motor moves the coaster to the top of the hill, before it zooms through loops and curves. The coaster requires two AA batteries, which are not included. In a new twist to K'NEX Thrill Rides, upon completion of building the coaster, children can download the free K'NEX: Ride It! app to take their play to a brand-new level. Once downloaded, children can ride the Space Invasion Roller Coaster in 2D or in VR, if a virtual reality viewer is accessible to them. Or, take building into the digital world! Rebuild the Space Invasion in the app or create any coaster you can imagine. Once done building in the app, kids can then ride what they just built! The K'NEX: Ride it! app perfectly marries a hands-on building experience with a mobile app. This set does not come with a VR viewer. This building set contains a full-color instruction sheet that walks your child through the process of building a coaster that will make your child want to start experimenting immediately. Promote the development of STEAM (science, technology, engineering, arts, and math) concepts by igniting your children's natural curiosity and creativity. Let them design, construct, and customize their own K'NEX models and enjoy hours of fun playing and learning with them. Get excited to Build It! and Ride It! with the Space Invasion Roller Coaster Building Set, from K'NEX Thrill Rides!.