Toby Fox's Undertale became a global phenomenon for a reason — its blend of emotional storytelling, unconventional combat, and memorable characters struck a chord with players around the world. The game's influence gave rise to a new wave of titles that embrace its signature style: challenging boss battles and narrative-driven adventures where your choices truly shape the journey.
On this page, you'll find a curated collection of free Undertale-inspired games — no download, no installation, and no sign-up required. Play instantly, right in your browser. Whether you're exploring mysterious worlds, facing off in dynamic battles (including rhythm ones), or encountering characters who challenge your assumptions, these games carry the spirit of Undertale forward in creative and compelling ways.
FNF VS Perfectly Normal Sans
Undergarf: Bad Monday Simulator
Peter Griffin in Undertale
Underwheels
Deltarune: A Different Snowgrave
FNF: Genocidal Trouble (Undertale x Triple Trouble)
FNF VS Fanon Chara
Deltarune: Lightners Live Plus
Deltarune: Dreamland Saga
Fortnite 2
FNF x Dusttale: Friday Night Dustin' (Full Version)
4d ago
FNF: Seek's Cool Deltarune Mod v5
FNF: Indie Cross FULL-WEEK (VS Cuphead, Sans & Bendy)
FNF VS Mr. Beast: Attack of the Killer Beast
Deltarune: Eram Boss in Mario
Mimi Quest
FNF VS Chara 2.0
FNF VS Skeleton Bros v2 (w/ The Murder)
FNF: DeltaFunk!
FNF: Skeleton Bros (Undertale)
FNF: Dusttale REMASTERED ONLINE (Friday Night Funkin')
FNF: Crossed Out
FNF VS Sans: Bad Time (Leebert Remix)
FNF VS Chara: Remake
FNF: Quite Rude Encounters
FNF VS Undertale
FNF: Last Determined
FNF Undertale: VS Sans, Omega Flowey & Asriel Dreemurr
FNF: Funkarune
FNF x Undertale: Raps of Mt. Ebott
FNF VS Sans: Bones n' Notes
One Pencil
FNF x Undertale: Lazybones
FNF: Turned to Dust
FNF: Toby Hack
Burgerguy Adventure: Chapter One
FNF: Underline 024 — LivinIt
FNF VS Sans: Weiner
FNF: Untitled Undertale Mod
FNF: Last Funk
FNF: Star Verse
FNF VS Chara: Fan Remaster
FNF x Undertale: DustSwap
Tiny Tied
FNF VS Chara: Slot's Take
FNF: His Mod v3 (VS Asriel)
FNF VS Ourple Guy: Circadian Rhythm