Just to give you some insights what a game look like. It is a RPG, two-dimensional, looks like a very old game and the theme is some sort of an underground fictional fantasy world where you try to survive some sort of twisted thematic rooms.
Initial release date: September 15, 2015
Developer: Toby Fox
Engine: GameMaker
Designer: Toby Fox
Website: https://undertale.com/
If you have a problem understanding WHAT DOES IT DO!!?? ... here is a little bit of a help for you.
- https://www.ign.com/wikis/undertale/Cheats_and_Secrets#So_Sorry.C2.A0
- https://www.reddit.com/r/Undertale/comments/3mzeqe/help_understanding_the_config_settings/?st=irciaj2y&sh=ed6d5f54
- https://dawsonmatthews.com/undertale.html
Screenshots from the game next time.