KA-POW! The world record for toppling dominoes has been broken!

Some 4,491,863 dominoes bit the dust in Holland this weekend, smashing the standing world record of 4,345,027. Both records were set by a man known as Mr. Domino.

Mr. D was helped by a team of 90 domino experts from 14 European countries who worked for two months on the masterpiece, in the Netherlands town of Leeuwarden. The builders used rulers and tweezers to ensure each stone was in its exact spot.

When toppled, the dominoes fell in a sequence lasting one-and-half-hours during which the dominoes climbed stairs, unveiled paintings and did all manner of other nerdy things.