The Numberblocks cross the magic moats to get to the Pattern Palace!
Plot
Numberblocks 1-5 are going to visit the pattern palace. One checks the map. A voice welcomes them to the Pattern Palace, where they must cross the Pattern Paths to get there. The first Pattern Paths show all red blocks. Three cuts in front of One and falls in and is then thrown back to the ground. Since One is red, only she crosses the first Pattern Path of red blocks. The second pattern has red and orange blocks, the third, red, orange and yellow, the fourth, all blocks are green with a gap after every four of them and the fifth, a hand is added after each one. When they make it to the palace, they meet Six.
Trivia
Zero, Seven, Eight, Nine, and Ten are absent from this episode.
The patterns:
All red
Alternating red and orange
Red, orange, yellow, repeat
Four greens and a gap
Hand, red, add one hand for each red
Blue is the only colour not mentioned, even though it's blue for Five.
This is because Five consistently calls the blue block "hand" as a hand is printed on it.
This episode shows Four's strength with him holding 11 blocks at once, which is almost 3 times his own weight.
A video uploaded by the official YouTube channel featuring parts of this episode is the most viewed video on that channel, with over 275 million views.