It's a very simple defend the castle game but quite enjoyable. It's not very long and there's not a lot of replayability to it so don't expect to waste more than 2 to 3 hours on it.
Crystal Fortress
- Release Date:
- Apr 11, 2025
- Developer:
- threepointstudio
- Publisher:
- threepointstudio
- Platforms:
- Windows
Game Tags
About This Game
"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.
Action point-based tactical gameplay
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!
Fast-paced turns
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!
Upgrade system for all units
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.
Chapter-based stages

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.
Screenshots
User Reviews
As a old-timer gamer, I do enjoy from time to time a simple 2D good tower defense game. The kicker? It has some sophistication on it's combat structure that I couldn't see back then. A simple, fun and honest indie game. For it's price it is a steal. TIP: Action Points from Phoebe = CASH, make her raise that sword up and let the team do the dirty work.
Little tower defence/turn based strategy. Liked it a lot!
System Requirements
Minimum
- OS *: Windows 7
- Processor: 2 GHz Dual Core
- Memory: 2 GB RAM
- Graphics: Integrated Graphics
- Storage: 500 MB available space
FAQ
How much does Crystal Fortress cost?
Crystal Fortress costs $5.00.
What are the system requirements for Crystal Fortress?
Minimum: Minimum: OS *: Windows 7 Processor: 2 GHz Dual Core Memory: 2 GB RAM Graphics: Integrated Graphics Storage: 500 MB available space
What platforms is Crystal Fortress available on?
Crystal Fortress is available on Windows PC.
Is Crystal Fortress worth buying?
Crystal Fortress has 100% positive reviews from 3 players.
When was Crystal Fortress released?
Crystal Fortress was released on Apr 11, 2025.
Similar Games
AI-powered recommendations based on game description