Core Keeper, Pugstorm’s mining-and-exploration adventure, is free to play on Steam through October 12, 2026. The Steam listing checked October 9 displayed free access until 10:00 a.m. Steam local time, followed by a discounted purchase offer through October 22. The free-play window gives players a chance to try its mix of survival exploration and cozy activities before deciding whether to buy.
When does the free-play weekend end?
Steam’s listing showed free play through October 12, 2026, at 10:00 a.m. Steam local time. That is the time displayed by Steam, not a single worldwide time; check the store page in your region for the current offer details. GamingBible reported the end time as 6 p.m. BST, so the time-zone wording differs between the reports. Steam’s Core Keeper store page is the primary place to check whether the promotion is still active.
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The Steam listing also showed a 40% discount, reducing the game from $19.99 to $11.99, with the purchase offer ending October 22, 2026. Those are the displayed dollar prices and dates recorded October 9; pricing and availability can differ by region or change, so use the live listing for the price that applies to your account.
What is Core Keeper?
Developed by Pugstorm, Core Keeper is a mining sandbox adventure set in an underground world. Steam describes a loop built around gathering resources, crafting equipment, building a base, exploring caverns, and fighting enemies. Players can also garden, fish, cook, care for animals, level skills, discover biomes, and take on Titans.
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The setting includes areas such as the Clay Caves, Shimmering Frontier, Sunken Sea, and Desert of Beginnings. Its appeal depends on how much you enjoy alternating between exploration and survival tasks and slower activities like farming or animal care. GamingBible framed the game as having a Valheim-style gameplay loop with Stardew Valley-like aesthetic appeal; that is an editorial comparison, not an official description or a claim that the games play the same.
Can you play alone or with friends?
Steam lists both solo play and online co-op for two to eight players, with drop-in/drop-out support. That makes the game workable as a solo exploration project or a shared world where friends can join and leave without requiring everyone to play the same session from start to finish.
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What happens after the free period?
To keep playing after free access ends, you will need to purchase the game. Steam Cloud support is listed on the store page. GamingBible reports that save data is retained after the weekend, but the Steam listing consulted does not independently confirm that specific promotion-related detail; check the current store terms if continuing the same save matters to you.
Steam also displayed an Explorer’s Edition bundle containing the game, soundtrack, and Explorer’s Guide. It is a digital bundle option rather than a physical edition.
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Is the free weekend worth trying?
The free window is a low-commitment way to find out whether the balance suits you: Core Keeper combines mining, combat, and cavern exploration with farming, fishing, cooking, and animal care. Try it if that mix appeals, or if you want to see whether you prefer its solo pace or its co-op option before buying. Steam’s listing showed 94% positive from 23,746 English reviews and 93% positive from 534 recent reviews when checked in 2026; those are changeable Steam review figures, not independent research results.
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