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Library/Game/Core Keeper’s underground breakout/Certificate

Spread Certificate · No. HIS-01895

Core Keeper sales hit a quarter-million copies in a week

This certifies how far it spread

Core Keeper’s underground breakout

Pugstorm; Fireshine Games ·March 2022 ·seeded onOpen webthenPressTwitch

Spread Score

36

Niche

Verified independently

Verified

34.4K players

March 2022 Steam monthly peak

Steam Charts

Verified

7.6K players

Steam launch-day concurrent player peak

PCGamesN

Verified

13 days

Seed to milestone, Mar 8 ’22 to Mar 21 ’22

Verified

3 platforms

Started on Open web

Claimed, not audited

Claimed

500K sold

First two weeks copies sold, publisher reported

Per Games Press

Claimed

250K sold

First-week PC copies sold, developer reported

Per PCGamesN

Claimed

100K sold

First two days copies sold, developer reported

Per PCGamesN

Issued Oct 28, 2026 · Spread Score v1.3 · 15 sources

howitspread.com/id/HIS-01895

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