There is be many cancel mods in the FNF community, and in some I don't know about it and care about it, and sme which I know about it and feel sad for the cancellation.

Sonic.EXE (Original)

This is most known mod which be cancelled, reasons of the cancellation of the mod was the author be very young and he couldn't hold this big project, also mod get so many leaks and stress during developing. After all that stuff team suggest to cancel project and published unfinished build

I felt very sad when I understand mod is cancelled. But at same time I Understand developers because behind of the development happens many dramas and no one would like to work on the project with those things, and there is be many things which want to add it, here is link to wiki about the Sonic.EXE where is have things which want it to add it, there even plan to make 3.5 version: https://fridaynightfunking.fandom.com/wiki/Vs._Sonic.Exe

But it's not end of the Sonic.EXE, because original creator RightBurstUltra was make reboot of the mod but with new devs instead of OG

Videoes belongs to Community Game

When I saw this, I be shocked and happy because, here the official return of the Sonic.EXE, it looks nice, is only demo but I am already excited for the new update. Music doesn't catch how the original tracks but they are sounds nice. I could wish them luck in the development of the mod.