Before episode: Minty the Pegasus has eaten too much candy and cannot fly, so she asks Tiffi to help give her a boost. Tiffi says that helping is her specialty. After episode:
Tiffi grabs a chocolate teeter-totter to use as a catapult. She jumps on it to send Minty flying in midair. Minty can once again fly.
Rainbow Runway contains levels 426-440. This episode can be known as the continuation of Soda Swamp as it contains 5 very hard levels like 427, 428, 434, 438, and 440, and has beaten the record of Pastille Pyramid to have 4 very hard levels, becoming the most very hard levels in a single episode tied with Biscuit Bungalow. Worst of all, Level 437 is the most difficult in the episode with a rating of insanely hard. It is also the first episode with 6 very hard or harder levels. Level 432 is also considered quite hard in the episode. Even the timed level of this episode, level 433, can be quite tricky. Level 433 is also the only timed level of the game to have Toffee tornadoes on the board. However, there are some easy levels such as 426, 430, 435, 436, and 439. Overall, this is a very hard episode.
The website Crushingcandies.com hoaxed a fake episode 30. It was supposedly called "Cupcake Forest" and contained 7 jelly levels, 5 ingredients levels, 2 candy order levels, and 1 timed level. Crushingcandies.com then explained they got the false information from the regular Candy Crush Saga Wikipedia page and apologized for the false information.
Before the release, if you scrolled to the very top of the board, the first 3 spaces of the episode could be seen, but the spaces had no level type icon or number, and the colour was a dark blue, although this episode's colour is pink (see picture).
Upon its release, when you are playing timed levels, displaying "Get (required points) points!" is now "Get (required points) points in (time) seconds!".
This episode starts a trend in which all levels ending in 0 or a multiple of 10 are considerably hard or higher, starting from level 440 and ending in Level 570.
Even though this episode is based on rainbows, there are hardly any rainbow candies at all except when you get them from a mystery candy in levels 432 and 435.