Spread Certificate · No. HIS-00327
This certifies how far it spread
Opus Magnum
Zachtronics ·October 2017 ·seeded onOpen webthenPressXRedditGroup chatsAudio
Spread Score
46
Notable
Verified independently
Verified
1.4K players
Base-game all-time concurrency high, March 2026 (sampled)
Steam Charts
Verified
890 players
December 2017 Steam concurrency high (Steam Charts sample)
Steam Charts
Verified
Week of Nov 1, 2017
Peak date, Oct 19 ’17 to Week of Nov 1, 2017
Verified
6 platforms
Started on Open web
Claimed, not audited
Claimed
6.9K posts
Steam Workshop puzzle uploads (live counter, includes DLC puzzles)
Per Valve / Steam Workshop
Claimed
200K–500K
Estimated Steam owners, not audited sales (live model)
Per Steam Spy
Claimed
7.3K
Steam reviews, all languages and purchase types (live)
Per Valve / Steam