From the Mindware site: Tick, Tock—Quick, Find a Place for That Block! Put your spatial skills to the test! Fit the correct block on the structure and hit the stop button before time runs out—move too slowly, and the base vibrates, setting off an avalanche of brightly colored pieces. Words, music and lights add urgency and get kids excited to play game after game. Includes 24 blocks, electronic building base with three levels of difficulty, volume control and auto shut-off feature. Requires three AA batteries (not included). Ages 6 and up

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