Crystal Keeper
Wait for a sale Chip's verdict · US updated 2 days ago No real discount right now, sitting 100% of the way from its all-time low to full price. One to watch rather than buy today.
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About this game
What this game is, in the developer's words
Mine crystals and defend your wall in this survival defense game. Balance resource gathering with combat as you upgrade your way through endless enemy waves.
A tiny survival defense game about mining crystals and defending your wall.
Your base is under siege! As the keeper, you mine crystals while fighting off endless waves of enemies. You'll upgrade your defenses, boost your mining efficiency, and unlock powerful abilities as you see how long you can survive.
Every few waves, pick from three random permanent upgrades that shape your strategy. Will you become an unstoppable warrior who barely needs walls? A mining tycoon with impenetrable automated defenses? Or find your own path to survival?
Can you find the perfect balance between gathering resources and defending your walls?
And of course, don't die...
Features
⚔️ Dual gameplay - mine crystals while defending your castle
💎 6+ different upgrade paths to develop
🏰 Turrets, auto-drills, and defensive structures to build
📈 Idle progression with active gameplay elements
🌊 Endless waves with increasing difficulty
🎯 Permanent upgrade choices every few waves
⏰ 1-2 hours to reach late game content
Media
Trailers and screenshots straight from the store page
Price intelligence
Accepted price history and the lows that matter
Crystal Keeper price history and best deals
Crystal Keeper for PC currently sells from $2.99 at authorized stores. Its all-time low is $1.49, set on 2026-07-07.
Frequently asked questions
Answered from this game's own price and edition data
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