Choose Honkai Impact 3rd
Choose Honkai Impact 3rd if it matches what drew you to this matchup. 4,659 Steam reviews back the pick.
Honkai Impact 3rd vs Harmonic Catastrophe
Honkai Impact 3rd and Harmonic Catastrophe both land in Action, Adventure, 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 Action, Adventure, RPG on Steam. Both are free to play. Both support cooperative play. 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 Harmonic Catastrophe
Choose Harmonic Catastrophe if you want the Shared/Split Screen and Shared/Split Screen Co-op side of the pairing.
Both Honkai Impact 3rd and Harmonic Catastrophe sit in Action, Adventure, and RPG on Steam and both list Multi-player, Online Co-op, and Co-op, 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
 Honkai Impact 3rd |  Harmonic Catastrophe | |
|---|---|---|
| Released | 2021 | — |
| Genres | Action, Adventure, RPG, Free To Play | Action, Adventure, RPG, Free To Play |
| Platforms | Windows | Windows |
| Steam Deck | Deck Unsupported | Unrated |
| Price | Free to play | Free to play |
| Steam reviews | 74.3% positive (4,659 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, Co-op | Multi-player, Cross-Platform Multiplayer, Online Co-op |
| Developers | COGNOSPHERE PTE. LTD. | Splinternova |
Side by side
- Both share Action, Adventure, RPG on Steam.
- Both are free to play.
- Both support cooperative play.
- Honkai Impact 3rd is Deck Unsupported on Steam Deck; Harmonic Catastrophe has no Deck rating yet.
Honkai Impact 3rd vs Harmonic Catastrophe — FAQ
- Are Honkai Impact 3rd and Harmonic Catastrophe similar?
- They overlap on Action, Adventure, 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.
- Do both Honkai Impact 3rd and Harmonic Catastrophe have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Honkai Impact 3rd ships Online Co-op, Co-op; Harmonic Catastrophe ships Online Co-op, Shared/Split Screen Co-op.