GAME
Opus Magnum
Reading the near-unanimous Steam praise for an open-ended optimization puzzle
Zachtronics · 2017-12-07 · ■■■□□ 3/5 · 9/10
Where are you with this game?
Press one and the game goes on your shelf. You can see it on your account page.
In three lines
Opus Magnum is a puzzle / programming puzzle game released by Zachtronics in 2017.
Puzzlebyrinth scores it 9/10, with a difficulty of 3/5. Reading the near-unanimous Steam praise for an open-ended optimization puzzle
Its core mechanics are Programming & Instruction Writing.

Our Review
A 2D puzzle where, in an alchemist's workshop, you combine rotating and extending arms with tracks to ferry and bond atoms into potions and metals. The board and part count are unlimited, so the contest is less about clearing than about how elegantly, quickly, and compactly you build — Zachtronics' signature work.
Mentions across our columns (13)
Puzzle Soundtracks(3)
- 2026-09-01 · Doremi · 4 mentionsSoundtrack: EXAPUNKS — the metronome that won't wait for you
- 2026-07-12 · DoremiSoundtrack: SHENZHEN I/O — music that names your concentration in its titles
- 2026-06-24 · Doremi · 9 mentionsSoundtrack: Opus Magnum — A loop that never insists, beside an optimization that never ends
Design Roundup(3)
- 2026-08-03 · Tsumiki · 5 mentions"Except for burritos, food shows you what's inside" — how Zach Barth made Kaizen's puzzles legible
- 2026-07-09 · TsumikiInvesting in “hard because you think”: what the 2026 Draknek New Voices grant's six games say about puzzle design
- 2026-06-27 · Tsumiki · 2 mentions"We didn't want to make just another shooter": Capcom's Pragmata on the puzzle-shooter, and Draknek on what a puzzle game is



