I recently made this google slide containing 280+ undertale & deltarune fan games, I will be updating it. If you have a fan game you'd like me to add, let me know (feel free to share it if you want) help from @DonKorge 
https://docs.google.com/presentation/d/1A0_nkaxtmUXjT31E-YADveNUAfMjt4ZmPbM8A-0ryEY/edit?usp=sharing
1
Next up
Undertale fan game sign up: new members needed
Out fan game Undertale: harsh parallel’s is looking for musicians, if your interested or know anyone please comment below (if you wanna help with miscellaneous sprites, objects, attacks, ect) also leave a comment. Please
Desperatale is looking for coders. If you’re interested please consider joining (game details below) https://gamejolt.com/games/Desperatale/870773
Frisk 
THE TWELVE SLOT SALOON KICKSTARTER IS LIVE! (Game inspired by Undertale/deltarune, Zelda majors mask, earthbound and pokemon mystery dungeon)
@Magnoentry33 
is a Jolter to Watch and pixel artist in search of true freedom within you! Follow @Magnoentry33 before the quest ends on September 23 and you'll get Coins!
TG!underwars is looking for a musician, level design and beta testers. https://gamejolt.com/games/UNDERWARS/930405
Deltastars by @ShurikenRei 
is looking for coders and musicians (it would mean a lot if any coders or musicians join) and don’t forget to give a follow too
Happy 10th Anniversary to Undertale from Team Marine 
Some newer/obscure undertale/deltarune fan games to keep a look out for
91 comments