This is the last episode of Season 1 of Blue's Room.
This also marks the final time the Season 1 structure of "Blue's Room" was used, as, after this episode, many changes were made to the show's episode structure.
In addition to this, this marks the final time "Polka Dots' Puzzles" is played, as it was removed altogether starting with the next episode.
This is the final episode in which Peter Linz performs Polka Dots and Doodle Board. Starting with the next episode and Shape Detectives, both characters get new performers. However, the name of these performers is currently unknown, as the end credits, nor Nickelodeon, don't list who puppeteers who on the show.
This is also the last episode where Leslie Carrara-Rudolph puppeteers Blue. She would be replaced by Noel MacNeal starting with the next episode, while Victoria Pontecorvo still voices Blue.
This is another episode focusing on the alphabet and words.