Right.David wrote: ↑August 18th, 2019, 11:48 am[...] PoP was also featured in an earlier comic.
The places of three potions (of the four) are marked with coins.
An interactive comic, even.
You can actually visit the prince, as I did just now (see attached image).
It's not easy to reach the prince.
https://xkcd.com/1608/
You can quickly press the up arrow multiple times to 'fly'.
First go to the right, passed the wall.
Then when you see people who say "wow", hover top-right.
You will find a ship.
The top right of that ship has incoming bombs.
Follow the bombs to find a HUGE Star Destroyer.
This thing really is HUGE.
You need to go to the lower-right of that Star Destroyer.
(Literally keep going until you find its actual lower-right.)
At the bottom there, you will find a vertical entrance with a "boing" coin in it.
Enter there.
Go left to the bulb.
Go up from the bulb, and keep going, ignoring the first left.
Then go left briefly, down briefly, and to your left is the PoP level.