Off

Its point of contact with Undertale is deep RPG systems, dark, oppressive atmosphere and horror setting. Both also lean on single-player focus and an isometric view. The distance is in tone.

Games like Undertale · Find similar →
We filtered the 50 games similar to Undertale down to the 5 that fit the “Puzzle” category. Off, Thronebreaker: The Witcher Tales and Mario & Luigi: Dream Team top the list, ranked by affinity and similarity score to Undertale.
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Within the “Puzzle” category, the closest game to Undertale is Off — scoring 72/100 on our similarity scale. Thronebreaker: The Witcher Tales and Mario & Luigi: Dream Team follow close behind.
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Handpicked by our similarity algorithm, these are the titles with the highest gameplay match to Undertale. Each one has been evaluated across 17 real attributes — from combat style and progression mechanics to world structure and visual perspective — so every recommendation is based on how the game actually plays, not just its genre label.

Its point of contact with Undertale is deep RPG systems, dark, oppressive atmosphere and horror setting. Both also lean on single-player focus and an isometric view. The distance is in tone.

Genre puts it alongside Undertale, and so does deep RPG systems, strong narrative focus and fantasy world. The common ground extends to single-player focus and an isometric view. Where the two diverge is visuals and setting: a medieval setting.
Released 3 years after Undertale.

The thread back to Undertale runs through deep RPG systems, fantasy world and single-player focus. Both also lean on an isometric view. The distance is in setting — its own ground is exploration and discovery, and precision platforming.

On paper it is what Undertale is — deep RPG systems, dark, oppressive atmosphere and single-player focus — though the resemblance is mostly at that level. To that it adds 2D presentation. They part company on tone and visuals: this one brings exploration and discovery.
It predates Undertale by 10 years, with what that implies technically.

Shelved next to Undertale for good reason: deep RPG systems, fantasy world and single-player focus. The distance is in visuals and setting — its own ground is a third-person camera.
If Undertale left you wanting more, this is where you narrow it down. Was it the puzzle or the adventure that hooked you? There is a list of just that. And if you play on PC, Nintendo Switch, PlayStation, Xbox and Mobile, filter by platform and skip the games you could not play anyway.
Sometimes what you want is not a Undertale look-alike but simply the best Tactical RPGs there are. That is what these rankings are for: no comparison to anything, just the highest-rated games. And if you feel like widening the net, the RPG Games ranking is a good way to run into something you were not expecting.