Episode Gallery Transcript

Twenty-One and On is an episode of Season 6 of Numberblocks.


Twenty and chums find out what happens if you go past bus stop 20.


  • This episode has confirmed that contrary to popular belief, Numberblocks will, in fact, EXCEED Twenty.
  • This also confirmed that while Twenty-One's design isn't official, the compound Numberblocks DO exist

Comment Overflow

When the episode was uploaded onto YouTube by "Autism Belton", "Arifmetix" and a few other people, many fans began to spam comments relating to a very popular Numberblocks Youtuber, J W, who uses a blue One (formerly J) as his avatar. This is because the episode had one scene where Twenty-Two splits into a red and blue pair of Elevens, who split into 11 blue and 11 red ones. The blue ones bare a striking resemblance to J W's character, which is the reason behind the overflow.


Numberblocks episodes
Here are all the Numberblocks episodes.

Series 1

High Five!

One, Another One, Two, Three, One, Two, Three!, Four, Five, Three Little Pigs, Off We Go, How to Count, Stampolines, The Whole of Me, The Terrible Twos, Holes, Hide and Seek

Ten out of Ten

Six, Seven, Eight, Nine, Ten, Just Add One, Blast Off, Counting Sheep, Double Trouble, The Three Threes, Odds and Evens, Fluffies, The Two Tree, Numberblock Castle, Ten Green Bottles

Series 2

Number Fun

Once Upon A Time, Blockzilla, The Numberblocks Express, Fruit Salad, Zero, Now We Are Six To Ten, Numberblobs, Building Blocks, Peekaboo!, Hiccups, What's the Difference?, Numberblock Rally, Five and Friends, Octoblock to the Rescue!, Ten Again

Fifteen and Friends

Flatland, Pattern Palace, The Legend of Big Tum, Mirror, Mirror, The Wrong Number, Eleven, Twelve, The Way of the Rectangle, Ride the Rays, Block Star, Thirteen, Fourteen, Fifteen, Tween Scenes, Step Squads

Series 3

Season 5

Fifteen's Minute of Fame, On Your Head, Ten's Place, Balancing Bridge, Sixteen, Square Club, Seventeen, Eighteen, Loop the Loop, Nineteen, Twenty, Tall Stories, Flights of Fancy, I Can Count to Twenty, Heist

Season 6

Sign of the Times, Fun Times Fair, The Lair of Shares, Terrible Twosday, Divide and Drive, Twenty-One and On, We're Going on a Square Hunt, Thirty's Big Top, Land of the Giants, Fifty, Sixty's High Score, The Big One, One Hundred, One Thousand and One, More To Explore

Upcoming (confirmed)


Numberblocks Theme Song

Fourth Wall Breaks

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