Loading…
Defend the Crystal Fortress and its people from invading forces in this blend of Turn-Based Tactical RPGs and Tower Defense. Summon the infantry, call out the archers, deploy turrets. Use all the available tools to keep the enemies at bay!
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
How it worksTracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Third-party resellers. Often cheaper, without official store support. Keyshop prices vs Steam →
"This fortress is our home. We will not let the enemy shatter it."
— Captain Phoebe of the Crystal Guard
You take control of Phoebe - fierce warrior, skilled archer, resourceful engineer and fearless commander of the Crystal Guard. Summon powerful soldiers and snipers, mount defensive turrets on the battlefield and get to the frontlines — whatever it takes to leave the fortress intact.
Units recover a limited number of action points (APs) per turn, requiring careful planning. Should you act aggressively with your current points to approach and attack the enemy, or stay put and defend to recover additional points while letting them get closer to the fortress? But beware: enemy units can act the same way!
In this game, you only control the main character. After you make your move with Phoebe, all ally units take their action simultaneously, followed by all enemy units at once, resulting in a very fluid and quick passage of turns!
Spend your gold between battles to power-up each of your units, increasing their Max HP, Max AP and AP Recovery, Damage, among others. Be prepared, for the enemy waves will grow relentlessly.
Experience stage progression divided into chapters, providing different environments to play as the Crystal Guard shifts their defensive efforts to each of the four gates.
Lowest tracked price: €1.04 (Jul 9, 2026) · current best: €1.09 across 2 stores.
96% positive reviews all-time.
Right now the cheapest offer for Crystal Fortress is €1.09 at Eneba. KingsPrice compares 2 offers from 2 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Crystal Fortress is €1.04 (recorded on Jul 9, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Keyshops are marketplaces that resell game keys, usually below official store prices. The keyshops listed on KingsPrice deliver genuine Steam keys, but buyer protection differs from official stores — check the shop's rating and refund policy before buying. You can hide keyshop offers at any time with the keyshops toggle. Keyshop prices vs Steam →
Create a free price alert on this page and KingsPrice will email you when Crystal Fortress drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
