You like Undertale? How about these old horror RPGs that are just as amazing and need a fandom revive.
About a young girl (Madotsuki) traveling in her nightmares
About a nine year old girl (Ib) trapped in an art gallery with two strangers
A man named The Batter sent on a holy mission to purify.
ALL OF THESE GAMES ARE FREE AND HAVE–
In depth characters
Great writing/ story
Open to theories