>>715687630
It's an Undertale fangame that isn't just a single boss fight ramped up to 11 or something limited to a single segment of the game. On top of the fact it's also an Undertale fangame that does not take place within the events of the actual Undertale game, meaning that you get to experience a side of the underground that's never before seen, with new characters and stuff.
It has cool gameplay but keep two things in mind: The story is very flawed and some boss fights are as bullshit as those .exe creepypasta ass fangame bosses.