Aired: Jan 23, 2016A mysterious red block descends from the sky, transforming into a being with ...


Double trouble ensues as Four splits into two, and a mischievous pair of twins, the Terrible Twos, arrive on the scene, determined to tickle their friends to pieces.
Streaming in:
United Kingdom
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At the present time, viewers have the opportunity to enjoy "Numberblocks" completely free of charge, though with occasional advertisements, on the following streaming platforms: BBC iPlayer.