K'NEX Thrill Bionic Blast Roller Coaster This 809-piece K'NEX Thrill Bionic Blast Roller Coaster ($60, originally $120) connects to the K'NEX Ride It! app, where kids can ride the Bionic Blast in virtual reality. Image Source: amazon.com K'NEX Thrill Bionic Blast Roller Coaster $60 from amazon.com Buy Now