A minimalist physics puzzle game where your past actions replay to help you solve challenges. Plan trajectories, record paths, and guide echoes through nodes to reach the goal. Offers a unique cooperative gameplay experience with handcrafted levels.



250+ iOS apps & games curated and reviewed
Whether you're new to puzzle observatory or looking for an upgrade, our curated collection of 250+ iOS apps and games has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | May 2026 | ||
| 2 | Free | 4.6★ (42) | Yes | No | Nov 2026 | ||
| 3 | Free | 4.7★ (1.5K) | Yes | No | Nov 2026 | ||
| 4 | Free | 4.8★ (106K) | Yes | No | Nov 2026 | ||
| 5 | Free | 4.5★ (2) | No | No | Aug 2026 | ||
| 6 | Free | 2.9★ (26) | No | No | Nov 2026 | ||
| 7 | Free | 4.8★ (11K) | Yes | Yes | Nov 2026 | ||
| 8 | Free | — | Yes | No | Nov 2026 |







A minimalist physics puzzle game where your past actions replay to help you solve challenges. Plan trajectories, record paths, and guide echoes through nodes to reach the goal. Offers a unique cooperative gameplay experience with handcrafted levels.






This logic puzzle game challenges you to lay railway tracks to form a single, connected route. Use number clues and spatial reasoning to place each track segment correctly. Enjoy a relaxing, brain-boosting experience with no timers or pressure.