Board Thread:General Discussion/@comment-27579341-20170131220130/@comment-31147727-20180215201748

I think Undertale 2 should start off with the Flowey room after the true pacifist ending, but after a few lines of his dialogue, he goes "what? You want to keep playing?" and then questions why the player would want to keep playing, saying the surface world would work differently than the underground, you can't fight monsters anymore, and that it could never live up to the original game, then, when the actual game begins, the game checks if the player has finished a genocide run in a previous version of undertale (by first checking if the file exists in either of the two potential installation locations, then checking the file if it does exist, if not assume that you haven't done genocide) if the player has done a genocide run, they have a really tough battle with Chara right off the bat. If you die, the game will crash and you'll have to start all over, and fighting her only makes her stronger, like the amalgamates. if the player hasn't finished a genocide run, then they avoid this rage-inducing battle.

after completing (or skipping) Chara's battle, Frisk wakes up in the bedroom of Newer Home. They can explore this monster settlement at the base of mount Ebbot, with all the monsters expressing their excitement and/or fear of meeting the humans for the first time. some of the monsters will also teach you new mechanics, like how humans fight and forming parties (you can invite members to join you on your adventure! of course, because it's Undertale, not all the monsters will accept your invite, and they can argue with where you want to go.) Then, when the player proceeds down the mountains, they encounter a group of humans. some dialogue is exchanged, and just when you're about to have your first (or second, if you did a genocide run) fight, the annoying dog appears to the tune of, what else, Dogsong.

It turns out that the annoying dog, being Toby Fox's avatar, is essentially Undertale's version of Jesus, and him returning to the surface is equivalent to the second coming of Christ. The humans immediately change their tune about monsters because, hey, they brought The One True Dog with them! and then Flowey pops up in front of the screen and says "well what did you think was going to happen?" Cementing Undertale 2 as the biggest troll in gaming history.