Choose Undertale
Choose Undertale if it's currently about 60% cheaper on the Steam Store. 160,033 Steam reviews back the pick.
Undertale vs DELTARUNE
Undertale and DELTARUNE both land in Indie, RPG on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Indie, RPG on Steam. Undertale (2015) is 10 years older than DELTARUNE (2025). DELTARUNE scores higher on Steam reviews (98.6% positive) than Undertale (96.6% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose DELTARUNE
Choose DELTARUNE if it carries the stronger Steam consensus at 98.6% positive across 63,288 reviews.
Both Undertale and DELTARUNE sit in Indie and RPG on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Undertale |  DELTARUNE | |
|---|---|---|
| Released | 2015 | 2025 |
| Genres | Indie, RPG | Indie, RPG |
| Platforms | Windows, macOS, Linux | Windows, macOS |
| Steam Deck | Deck Playable | Deck Verified |
| Price | 9.99 USD | 24.99 USD |
| Steam reviews | 96.6% positive (160,033 reviews) | 98.6% positive (63,288 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | tobyfox | tobyfox |
Side by side
- Both share Indie, RPG on Steam.
- Undertale (2015) is 10 years older than DELTARUNE (2025).
- DELTARUNE scores higher on Steam reviews (98.6% positive) than Undertale (96.6% positive).
- Undertale is currently ~60% cheaper on Steam than DELTARUNE (9.99 USD vs. 24.99 USD).
- Steam Deck: Undertale is Deck Playable, DELTARUNE is Deck Verified.
Undertale vs DELTARUNE — FAQ
- Which is better, Undertale or DELTARUNE?
- On Steam reviews DELTARUNE scores higher (98.6% positive) than Undertale (96.6% positive). Both have enough reviews to trust the signal, so for players using reviews alone, DELTARUNE is the safer pick. Genre fit still matters — check the side-by-side table for the categories each game lands in.
- Should I play Undertale or DELTARUNE first?
- If you want chronology, Undertale (2015) came out before DELTARUNE (2025). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Undertale and DELTARUNE similar?
- They overlap on Indie, RPG on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.