Undertale left a powerful, lasting impression, but the surprise of Deltarune (Chapter 1) proves that the lore and formula could evolve into something more.
Erick and Michael check out the latest game to come from Toby Fox, which could be a successor to Undertale. There will be spoilers, please be advised.
Undertale is an RPG where you don't have to kill anyone. Each enemy can be defeated non-violently. Dance with a slime. Pet a dog. Whisper your favorite secret to a knight. Or, ignore this choice and rain destruction upon your foes.
Deltarune / Fridge - TV Tropes
Our Cracked Broken Star, Undertale AU Wiki
Pixilart - Sans (Battle Sprite) by Nintendo-Fan, sans pixel art battle
Alphys - Wikipedia
Deltarune: Chapter 1 - GameSpot
Page 4, deltarune by HD wallpapers
Deltarune: A Wonderful Follow Up To Undertale Polygon, Kris DeltaRune HD wallpaper
Something I've realized: The narrator is not Kris themself, and
Steam Workshop::Man and Monster
Deltarune: Chapter 1 - GameSpot
Page 8, deltarune HD wallpapers
Page 59, undertale for HD wallpapers
vg/ - /utg/ - Undertale/Deltarune General - Video Game Generals
Deltarune: Chapter 1 - GameSpot
Deltarune Castle Town Wallpapers - Wallpaper Cave