DISCLAIMER: this Mod works best with Psych Engine 0.6.3 (which is an outdated Psych Engine for those who don't know)
Here's the link for Psych Engine 0.6.3 64 bit: https://github.com/ShadowMario/FNF-PsychEngine/releases/download/0.6.3/PsychEngine-Windows64.zip
And here's the link for the Psych Engine 0.6.3 32 bit: https://github.com/ShadowMario/FNF-PsychEngine/releases/download/0.6.3/PsychEngine-Windows32.zip
And finally, here's the link to the Mod itself: https://www.mediafire.com/file/2qu3x8f8m6qd8nj/rabbit-hole-fnf.zip/file
