As the bomb seemed to have ended up in the subway where the liches well of power resides, minus all the skeletons, I guess simon at least succeeded in saving the people there, well at least for a few minutes til the crown killed everyone
Alternate reality where Simon/Ice King freezes the bomb, threw in marceline as well as the shadows of the people running away.
Other Adventure Time Works
AT: Portrait- The Ice King [link]
ITS ADVENTURE TIME!!! [link]
.PSD of this Image at [link]
I always figured she found him after.
Simon's crown's motto: I will control and rule everything.
The Lich's motto: I will kill everything, and make them rise to serve.
Finn's motto: ADVENTURE TIME!
Marceline's motto: ... I miss you Simon ...
"IF I DON'T STOP IT WE'LL ALL BE DEAD!" he shouted back, finally accepting the power of the crown.
and I kinda believe that what with the broken down stuff everywhere and the fact of Jake saying that rockets haven't been "re-invented" yet...