Choose Abyss Odyssey
Choose Abyss Odyssey if you want the Multi-player, Shared/Split Screen, and Online PvP side of the pairing. On Steam, it's currently about 68% cheaper on the Steam Store. Abyss Odyssey launched in 2014.
Abyss Odyssey vs Onikira - Demon Killer
Abyss Odyssey and Onikira - Demon Killer both land in Action, Indie, Adventure 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 Action, Indie, Adventure on Steam. Abyss Odyssey (2014) is 1 year older than Onikira - Demon Killer (2015). Abyss Odyssey scores higher on Steam reviews (68.8% positive) than Onikira - Demon Killer (33.3% 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 Onikira - Demon Killer
Choose Onikira - Demon Killer if it's a focused single-player run rather than a multiplayer commitment. Onikira - Demon Killer launched in 2015.
Both Abyss Odyssey and Onikira - Demon Killer sit in Action, Indie, and Adventure on Steam and both list Steam Leaderboards, 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
 Abyss Odyssey |  Onikira - Demon Killer | |
|---|---|---|
| Released | 2014 | 2015 |
| Genres | Action, Indie, Adventure | Action, Indie, Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Deck Playable |
| Price | 4.49 USD | 13.99 USD |
| Steam reviews | 68.8% positive (805 reviews) | 33.3% positive (87 reviews) |
| Multiplayer | Multi-player, Online Co-op, Shared/Split Screen Co-op | Single-player only |
| Developers | ACE Team | Digital Furnace Games |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Abyss Odyssey (2014) is 1 year older than Onikira - Demon Killer (2015).
- Abyss Odyssey scores higher on Steam reviews (68.8% positive) than Onikira - Demon Killer (33.3% positive).
- Abyss Odyssey is currently ~68% cheaper on Steam than Onikira - Demon Killer (4.49 USD vs. 13.99 USD).
- Abyss Odyssey has co-op; Onikira - Demon Killer does not.
- Steam Deck: Abyss Odyssey is Deck Verified, Onikira - Demon Killer is Deck Playable.
Abyss Odyssey vs Onikira - Demon Killer — FAQ
- Should I play Abyss Odyssey or Onikira - Demon Killer first?
- If you want chronology, Abyss Odyssey (2014) came out before Onikira - Demon Killer (2015). 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 Abyss Odyssey and Onikira - Demon Killer similar?
- They overlap on Action, Indie, Adventure 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 Onikira - Demon Killer have multiplayer like Abyss Odyssey?
- No. Abyss Odyssey supports multiplayer on Steam (Multi-player, Online Co-op, Shared/Split Screen Co-op), while Onikira - Demon Killer is listed as single-player only.