Choose Core Keeper
Choose Core Keeper if you want a Simulation and RPG experience. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 22,806 Steam reviews back the pick.
Core Keeper vs ATMOSFAR
Core Keeper and ATMOSFAR 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. Core Keeper (2024) is 2 years older than ATMOSFAR (2026). Core Keeper is currently ~11% cheaper on Steam than ATMOSFAR (19.99 USD vs. 22.49 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 ATMOSFAR
Choose ATMOSFAR if you want a Casual and Early Access experience. ATMOSFAR launched in 2026.
Both Core Keeper and ATMOSFAR sit in Action, Indie, and Adventure 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
 Core Keeper |  ATMOSFAR | |
|---|---|---|
| Released | 2024 | 2026 |
| Genres | Action, Indie, Adventure, Simulation, RPG | Action, Indie, Adventure, Casual, Early Access |
| Platforms | Windows, Linux | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 19.99 USD | 22.49 USD |
| Steam reviews | 94.8% positive (22,806 reviews) | — |
| Multiplayer | Multi-player, Online Co-op, Co-op | Multi-player, Online Co-op, Co-op |
| Developers | Pugstorm | Apog Labs |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Core Keeper (2024) is 2 years older than ATMOSFAR (2026).
- Core Keeper is currently ~11% cheaper on Steam than ATMOSFAR (19.99 USD vs. 22.49 USD).
- Both support cooperative play.
- Core Keeper is Deck Verified on Steam Deck; ATMOSFAR has no Deck rating yet.
Core Keeper vs ATMOSFAR — FAQ
- Should I play Core Keeper or ATMOSFAR first?
- If you want chronology, Core Keeper (2024) came out before ATMOSFAR (2026). 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 Core Keeper and ATMOSFAR 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.
- Do both Core Keeper and ATMOSFAR have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Core Keeper ships Online Co-op, Co-op; ATMOSFAR ships Online Co-op, Co-op.
- Does Core Keeper run on Steam Deck?
- Yes — Core Keeper is rated Deck Verified by Valve. ATMOSFAR doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.