Random Prediction/Theory but....
ITFT may be a time loop.
- Ep 10 being titled "Never End"
- Channel 57, representing a "change" due to the number 57's meaning (Possible change in time?)
- Lucas's birthday, or just birthdays in general, have been a motif in some episodes. Notably the first challenge being to turn off a birthday card, and a "Happy Birthday Lucas" balloon appearing in the trailer. (Birthdays being a passage of time, as you grow older.)
- BOTH OF THE PRIMARY CHARACTERS (Clock and Lucas) ARE CLOCKS.
- at the end of the trailer, we can see that Lucas is presumably trapped in the void, as we Clock's sillhouette with the "Never End" title on his face.
With time being a common motif within ITFT, it's not out of the question that if we "remove" Polka Dot (or Clock), or if Lucas really does get trapped in the Polka Dot Void, then a time loop may occur, causing ITFT to leave on an ambiguous end. To "Never End".
But hey, that's just a guess!