Building with Q-BA-MAZE sparks even more creativity when cubes light up as marbles race through! Add gleaming eyes to your dragon maze. Build a marble run that looks like a light bulb and glows like one too! The possibilities are endless and brilliant! The motion-activated cubes flash blue, red, yellow or white every time a marble hits the cube floor. Light-up cubes are battery operated; the batteries are included and can be replaced. All light-up cubes are single exit and compatible with all Q-BA-MAZE 2.0 sets. The Starter Lights Set lets beginning builders experiment with 4 light-up cubes - one of each color: red, yellow, blue and white. Plus the set includes 28 standard cubes and 14 marbles for plenty of marble maze possibilities!