Choose Ostranauts
Choose Ostranauts if you want the Color Alternatives, Camera Comfort, and Custom Volume Controls side of the pairing. On Steam, it's Steam Deck Verified, so handheld play works out of the box. 2,106 Steam reviews back the pick.
Ostranauts vs Spiritus Astrum
Ostranauts and Spiritus Astrum both land in Indie, Simulation, 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, Simulation, RPG on Steam. Ostranauts (2020) is 6 years older than Spiritus Astrum (2026). Ostranauts scores higher on Steam reviews (79.9% positive) than Spiritus Astrum (76.2% 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 Spiritus Astrum
Choose Spiritus Astrum if you want the Multi-player, Online Co-op, and #category_playable_at_your_own_pace side of the pairing. On Steam, it's currently about 75% cheaper on the Steam Store. Spiritus Astrum launched in 2026.
Both Ostranauts and Spiritus Astrum sit in Indie, Simulation, and RPG on Steam and both list Playable without Timed Input, 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
 Ostranauts |  Spiritus Astrum | |
|---|---|---|
| Released | 2020 | 2026 |
| Genres | Indie, Simulation, RPG, Early Access | Indie, Simulation, RPG, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Deck Verified | Unrated |
| Price | 19.99 USD | 4.99 USD |
| Steam reviews | 79.9% positive (2,106 reviews) | 76.2% positive (21 reviews) |
| Multiplayer | Single-player only | Multi-player, Online Co-op, Co-op |
| Developers | Blue Bottle Games | Phoenix Game Development |
Side by side
- Both share Indie, Simulation, RPG on Steam.
- Ostranauts (2020) is 6 years older than Spiritus Astrum (2026).
- Ostranauts scores higher on Steam reviews (79.9% positive) than Spiritus Astrum (76.2% positive).
- Spiritus Astrum is currently ~75% cheaper on Steam than Ostranauts (4.99 USD vs. 19.99 USD).
- Spiritus Astrum has co-op; Ostranauts does not.
- Ostranauts is Deck Verified on Steam Deck; Spiritus Astrum has no Deck rating yet.
Ostranauts vs Spiritus Astrum — FAQ
- Should I play Ostranauts or Spiritus Astrum first?
- If you want chronology, Ostranauts (2020) came out before Spiritus Astrum (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 Ostranauts and Spiritus Astrum similar?
- They overlap on Indie, Simulation, 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 Ostranauts have multiplayer like Spiritus Astrum?
- No. Spiritus Astrum supports multiplayer on Steam (Multi-player, Online Co-op, Co-op), while Ostranauts is listed as single-player only.
- Does Ostranauts run on Steam Deck?
- Yes — Ostranauts is rated Deck Verified by Valve. Spiritus Astrum doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.