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. Requires two AA batteries, which are not included. In a new twist to K’NEX Thrill Rides, 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 Coaster in 2D or in VR, if a virtual reality viewer is accessible to them. Or, take building into the digital world and create any coaster they can imagine and ride what they just built! This set does not come with a VR viewer.