Choose SpaceChem
Choose SpaceChem if it's currently about 50% cheaper on the Steam Store. 1,904 Steam reviews back the pick.
SpaceChem vs Opus Magnum
SpaceChem and Opus Magnum both land in Indie, Simulation 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 on Steam. SpaceChem (2011) is 6 years older than Opus Magnum (2017). Opus Magnum scores higher on Steam reviews (97% positive) than SpaceChem (95.6% 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 Opus Magnum
Choose Opus Magnum if it's the newer release (2017) and ships with the modern feature baseline. 3,341 Steam reviews back the pick.
Both SpaceChem and Opus Magnum sit in Indie and Simulation on Steam and both list Steam Leaderboards, so either pick lands in the same broad neighborhood. Steam reviews are nearly tied (95.6% vs 97% positive), so genre fit is the cleanest tiebreaker — scroll the table for the feature-by-feature view.
Side-by-side comparison
 SpaceChem |  Opus Magnum | |
|---|---|---|
| Released | 2011 | 2017 |
| Genres | Indie, Simulation | Indie, Simulation |
| Platforms | Windows, macOS, Linux | Windows, macOS, Linux |
| Steam Deck | Deck Playable | Deck Playable |
| Price | 9.99 USD | 19.99 USD |
| Steam reviews | 95.6% positive (1,904 reviews) | 97% positive (3,341 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Zachtronics | Zachtronics |
Side by side
- Both share Indie, Simulation on Steam.
- SpaceChem (2011) is 6 years older than Opus Magnum (2017).
- Opus Magnum scores higher on Steam reviews (97% positive) than SpaceChem (95.6% positive).
- SpaceChem is currently ~50% cheaper on Steam than Opus Magnum (9.99 USD vs. 19.99 USD).
- Both are Deck Playable.
SpaceChem vs Opus Magnum — FAQ
- Which is better, SpaceChem or Opus Magnum?
- On Steam reviews the two are nearly tied: SpaceChem sits at 95.6% positive (1,904 reviews), Opus Magnum at 97% (3,341). The choice usually comes down to genre fit and the platform features each one supports — see the comparison table above.
- Should I play SpaceChem or Opus Magnum first?
- If you want chronology, SpaceChem (2011) came out before Opus Magnum (2017). 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 SpaceChem and Opus Magnum similar?
- They overlap on Indie, Simulation 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.