Well, I would really believe that Undertale would make a great movie, but in my opinion, not just one movie, but two one from the pacifist route and the other from the genocide, I would really go see at least one of these movies.

Of course, an Undertale movie wouldn't have a G rating, maybe it would be PG or even PG-13, especially considering it would have a genocidal route movie.

For sure, they would give a personality to the human, (Frisk), why a silent protagonist in games works, but in series and movies...
No wonder they practically never did that.

Well, that's my petition, an Undertale movie would be really cool, and an fan if you're out there, please help us all have a "good time" with this possible future movie!