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The video likely worked due to the inherent engagement of a competitive game with a ticking clock. The fast-paced nature and the visible progress of marking numbers create suspense and encourage viewers to watch until the end to see who wins.

Two people are playing a number-guessing game with a timer on a phone. They are both marking numbers on a whiteboard as they are called out, with the goal of being the first to mark three numbers. The game appears to be competitive and fast-paced.