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- $19.99BuyHumble Store
Also on Xbox (beta)
BETAExperimental — price lookup via an unofficial Microsoft Store API. The edition matched may be wrong, especially for games with many special editions.
- Xbox$19.99Buy
Price analysis
The most common cut was -50%. Across 15 discount periods in 24 months (about every 48 days), the median sale length was 7 days. Its lowest recorded price was $9.99 (-50%) on Nov 27, 2024, so today's price is 100% above the lowest we have tracked. It was last discounted 22 days ago, on Oct 7, 2026.
Concurrent players · last 30 days
We've started tracking concurrent players for this game — the 30-day graph fills in after about a day.
Opus Magnum is the latest open-ended puzzle game from Zachtronics, the creators of SpaceChem, Infinifactory, and SHENZHEN I/O. Design and build machines that assemble potions, poisons, and more using the alchemical engineer’s most advanced tool: the transmutation engine!
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From Wikipedia
Opus Magnum is a puzzle-based programming game developed by Zachtronics. It was released for Microsoft Windows, Linux, and Mac in December 2017, following about two months of early access. In the game, the player must assemble a series of machines using various tools and program them to complete alchemy-related tasks. The player can advance with any working solution to each problem, but is challenged through leaderboards to produce a machine that does the task in the shortest time, with the lowest cost of materials or the smallest occupied area. Opus Magnum is based on The Codex of Alchemical Engineering, one of the earliest Flash games made by Zach Barth prior to establishing Zachtronics.
Read more on Wikipedia →Recent discounts
| Period | Days | Max off | Low | MSRP |
|---|---|---|---|---|
| 2026. 10/1 ~ 10/7 | 7d | -50% | $9.99 | $19.99 |
| 2026. 9/10 ~ 9/13 | 4d | -50% | $9.99 | $19.99 |
| 2026. 6/25 ~ 7/8 | 14d | -50% | $9.99 | $19.99 |
| 2026. 5/28 ~ 6/3 | 7d | -50% | $9.99 | $19.99 |
| 2026. 3/17 ~ 3/25 | 9d | -50% | $9.99 | $19.99 |
| 2026. 2/4 ~ 2/10 | 7d | -50% | $9.99 | $19.99 |
| 2025. 12/18 ~ 1/4 | 18d | -50% | $9.99 | $19.99 |
| 2025. 10/13 ~ 10/18 | 6d | -50% | $9.99 | $19.99 |
+7 more periods (see heatmap)
DLC (1)
Latest news
- Oct 21, 2026UPDATE: New achievement for the De Re Metallica DLC
- Oct 21, 2026UPDATE: Polish journal translation
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