I think I found one of the best and most horrible mods in GMod.

Description: Undertale, The bonely one, Hardmode, Promised, GZtale, Negativetale, Inverted fate, Horrortale, Something new, Outertale, Underfell, TS!Underswap, Terr!Swapswap, Canonswap, Dusttale, Draky!Sans, Axtale (Or Axetale), Epictale, Hate!Sans, Palette!Sans, Gradient, Error!404, Dancetale, Reapertale, Puro Sans, Storyshift, Missing Code, Tears in the rain