hacker vs gaster!

most hardest extreme demon ever? gaster universe!

this gasterbot is nightmare boss. harder of oversavetale. only those with the strongest armor can pass or not

DF Chapter 1 if it was peaker:

[Remebering route]

cascade bossfight but impossible

Some might say that this picture is no different from RickyG's 2023 postcard, because everything on it "never wasn’t there, and it will never not be there".

Others might disagree with that.

Anyways, Happy 10th Anniversary, UPPERTALE!

undertale impostor fight

bad tom is extreme hard boss or impossible

* Knowing there were many people to join you in this moment... * It fills you with power... * You're filled with the power of forming a Kris army...

how?