Choose Parallel Experiment
Choose Parallel Experiment if it's the newer release (2025) and ships with the modern feature baseline. Parallel Experiment launched in 2025.
Parallel Experiment vs Unsolved Case
Parallel Experiment and Unsolved Case both land in 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 Indie, Adventure on Steam. Unsolved Case (2022) is 3 years older than Parallel Experiment (2025). Unsolved Case scores higher on Steam reviews (88.9% positive) than Parallel Experiment (87.3% 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 Unsolved Case
Choose Unsolved Case if you want a Free To Play and Casual experience. On Steam, it's free to play, so the barrier to trying it is zero. 3,304 Steam reviews back the pick.
Both Parallel Experiment and Unsolved Case sit in 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. Steam reviews are nearly tied (87.3% vs 88.9% positive), so genre fit is the cleanest tiebreaker — scroll the table for the feature-by-feature view.
Side-by-side comparison
 Parallel Experiment |  Unsolved Case | |
|---|---|---|
| Released | 2025 | 2022 |
| Genres | Indie, Adventure | Indie, Adventure, Free To Play, Casual |
| Platforms | Windows, macOS | Windows, macOS |
| Steam Deck | Deck Verified | Unrated |
| Price | 9.99 USD | Free to play |
| Steam reviews | 87.3% positive (324 reviews) | 88.9% positive (3,304 reviews) |
| Multiplayer | Multi-player, Cross-Platform Multiplayer, Online Co-op | Multi-player, Cross-Platform Multiplayer, Online Co-op |
| Developers | Eleven Puzzles | Eleven Puzzles |
Side by side
- Both share Indie, Adventure on Steam.
- Unsolved Case (2022) is 3 years older than Parallel Experiment (2025).
- Unsolved Case scores higher on Steam reviews (88.9% positive) than Parallel Experiment (87.3% positive).
- Unsolved Case is free; Parallel Experiment is paid (9.99 USD).
- Both support cooperative play.
- Parallel Experiment is Deck Verified on Steam Deck; Unsolved Case has no Deck rating yet.
Parallel Experiment vs Unsolved Case — FAQ
- Which is better, Parallel Experiment or Unsolved Case?
- On Steam reviews the two are nearly tied: Parallel Experiment sits at 87.3% positive (324 reviews), Unsolved Case at 88.9% (3,304). The choice usually comes down to genre fit and the platform features each one supports — see the comparison table above.
- Should I play Parallel Experiment or Unsolved Case first?
- If you want chronology, Unsolved Case (2022) came out before Parallel Experiment (2025). 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 Parallel Experiment and Unsolved Case similar?
- They overlap on 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 Parallel Experiment and Unsolved Case have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Parallel Experiment ships Online Co-op, Co-op; Unsolved Case ships Online Co-op, Co-op.
- Is Unsolved Case free?
- Yes — Unsolved Case is a free-to-play Steam title. Parallel Experiment is paid (9.99 USD).
- Does Parallel Experiment run on Steam Deck?
- Yes — Parallel Experiment is rated Deck Verified by Valve. Unsolved Case doesn't have a Deck rating yet, so its Deck behaviour is currently unverified.