Board Thread:Fun and Games/@comment-27276934-20151215003135/@comment-26814804-20160502140222

It's my personal opinion that there was a truly massive gap between when Chara and Frisk fell, given a few things.

1: Many monsters seem to indicate that it has been a very long time since a human (IE: the Seventh Human) has come through.

2: The Seventh Human, the most recent human to come through is armed with an "antique" revolver and a cowbody hat, and is therefore indicated to come from the Old West. By that standard, given that the events of Undertale take place from the 80s to the modern day, the most recent human fell about 100 years ago.