Undertale/Similar games

24 matches, ranked by how much their player tags overlap
What “like Undertale” means here
Matches come from the tags Steam players vote on each game, weighted so a rare tag counts for far more than one that sits on half the store. A game's popularity never moves it up this list.

Multiple Endings · Choices Matter · Pixel Graphics · Great Soundtrack
98% of 64,979 reviews positive
match

Choices Matter · Pixel Graphics · Great Soundtrack · Story Rich
53% of 3,684 reviews positive
match

Choices Matter · Multiple Endings · Pixel Graphics · Dating Sim
93% of 6,239 reviews positive
match

Choices Matter · Multiple Endings · Story Rich · Replay Value
96% of 261,550 reviews positive · 2,522 playing now
match

Bullet Hell · Pixel Graphics · Great Soundtrack · Retro
98% of 2,924 reviews positive
match

Multiple Endings · Funny · Dating Sim · Choices Matter
95% of 9,096 reviews positive
match

Multiple Endings · Choices Matter · Comedy · Funny
94% of 36,117 reviews positive
match

Multiple Endings · Choices Matter · Replay Value · Dating Sim
76% of 37,795 reviews positive
match

Multiple Endings · Pixel Graphics · Great Soundtrack · Story Rich
97% of 88,559 reviews positive
match

Multiple Endings · Choices Matter · Memes · Funny
99% of 59,561 reviews positive
match

Choices Matter · Multiple Endings · Dating Sim · Great Soundtrack
92% of 36,636 reviews positive
match

Choices Matter · Multiple Endings · Great Soundtrack · Story Rich
93% of 37,900 reviews positive
match

Multiple Endings · Pixel Graphics · Story Rich · Great Soundtrack
99% of 14,585 reviews positive
match

Choices Matter · Multiple Endings · RPG · Story Rich
82% of 5,107 reviews positive · 11 playing now
match
The closest matches to Undertale on Steam are OneShot, Heartbound, The Hex, Emily is Away Too, Detroit: Become Human. They rank highest because their Steam community tags overlap most with Undertale's, and shared tags include Multiple Endings, Choices Matter, Pixel Graphics.
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Multiple Endings, Choices Matter, Pixel Graphics count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Undertale's. Popularity never affects the ranking.