For three fucking years I've tried to post this but now

>>93266312
yes and no, the post apocalyptic plot just sorta kinda came after "business time" was aired

>what do you think?

Pen has often described the writing process like a game of dungeons and dragons, where the writers just sit around telling stories and spitballing ideas. So, yeah definitely not. It's pretty obvious that they just make shit up as they go along.

>>93266312
No, there are elements that were in season 1 that were later given backstories or expanded upon, and whether you think they did a good job or not is a different discussion, but whatever you think, the show was not planned out from season 1.

>>93266312
what >>93266328 and >>93266508
said, the post mushroom war apocalypse was always going to be the setting for adventure time to take place but it was never actually planned to actually be expanded on any deeper than that