This is an updated version of the original Subatomic Paraball K'nex ball machine. This new version is bigger, faster, longer, more reliable and all around cooler. The Knex balls race through over 110 feet of track divided into 5 different paths (one of which completely circles my room). Subatomic Paraball 2 contains over 12,000 pieces, many interesting elements, uses no non-K'nex parts and is completely freestanding. Statistics: Build time - 2 weeks Height - 7 ft Length - 110.5 ft Number of supporting towers - 10 Number of bridges - 21 Number of paths - 5 Number of pieces - about 12,000 Number of unique elements - 18 Max number of balls - 9 Number of chain lift hooks - 6 Number of lifts - 1