Choose Undertale
Choose Undertale if it matches what drew you to this matchup. 160,033 Steam reviews back the pick.
Undertale vs The Sword That Kills Christmas
Undertale and The Sword That Kills Christmas 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 8 years older than The Sword That Kills Christmas (2023). The Sword That Kills Christmas is currently ~29% cheaper on Steam than Undertale (7.11 USD vs. 9.99 USD). 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 The Sword That Kills Christmas
Choose The Sword That Kills Christmas if it's currently about 29% cheaper on the Steam Store. The Sword That Kills Christmas launched in 2023.
Both Undertale and The Sword That Kills Christmas 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 |  The Sword That Kills Christmas | |
|---|---|---|
| Released | 2015 | 2023 |
| Genres | Indie, RPG | Indie, RPG |
| Platforms | Windows, macOS, Linux | Windows |
| Steam Deck | Deck Playable | Unrated |
| Price | 9.99 USD | 7.11 USD |
| Steam reviews | 96.6% positive (160,033 reviews) | 2 reviews |
| Multiplayer | Single-player only | Single-player only |
| Developers | tobyfox | RubDoff Games |
Side by side
- Both share Indie, RPG on Steam.
- Undertale (2015) is 8 years older than The Sword That Kills Christmas (2023).
- The Sword That Kills Christmas is currently ~29% cheaper on Steam than Undertale (7.11 USD vs. 9.99 USD).
- Undertale is Deck Playable on Steam Deck; The Sword That Kills Christmas has no Deck rating yet.
Undertale vs The Sword That Kills Christmas — FAQ
- Should I play Undertale or The Sword That Kills Christmas first?
- If you want chronology, Undertale (2015) came out before The Sword That Kills Christmas (2023). 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 The Sword That Kills Christmas 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.
- Does Undertale run on Steam Deck?
- Yes — Undertale is rated Deck Playable by Valve. The Sword That Kills Christmas doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.