From the manufacturer:
The Domino Rally® Ultra Power set combines the fascinating action of falling dominoes with our most incredible stunts and a power dealer that automatically sets up the dominoes for kids. Domino Rally® is the adventure that never ends, but it’s also an engineering activity for kids that’s a great fit with STEM and STEAM. This classic domino race set provides addictive fun for the new domino fan and the experienced pro! Requires 2 AA batteries (not included). For 1 or more players, ages 6 and up.