# Core Keeper’s underground breakout

> Core Keeper sold 250,000 copies in less than a week of Early Access.

- Owner: Pugstorm; Fireshine Games
- Kind: Game
- Sector: Gaming
- Seed date: 2022-03-08
- Milestone date: 2022-03-21
- Date basis: Documented milestone; not a measured attention peak.
- Spread Score: 36 (Niche), v1.3
- Mechanics: Underdog, Press loop, Pairing, Platform jump

## Summary

Core Keeper entered Early Access in March 2022 and drew players and press attention. Its publisher reported 250,000 sales in under a week and 500,000 in two weeks.

## Timeline

- 2021-06-11 — Shacknews (Press) — Pugstorm announced Core Keeper with a trailer at IGN Expo.
- Feb 2022 — Wonacott Communications (Open web) — The PR agency seeded the game to media and influencers during Steam Next Fest.
- 2022-03-08 — Pugstorm (Open web) — Pugstorm released Core Keeper in Steam Early Access.

The full timeline, metrics and sources are on the case page, or via the Pro API (https://howitspread.com/mcp#api).

Canonical URL: https://howitspread.com/cases/core-keeper-breakout-2022

Cite as: How It Spread (2026). “Core Keeper’s underground breakout.” Case HIS-01895. Spread Score v1.3: 36/100. Updated 2026-10-28. https://howitspread.com/id/HIS-01895