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Watch trailer on Steam ↗Crystal Guardian
AKDasan · Published by AKDasan
1 user reviews — 0% positive (1 reviews) · 20 achievements
Last updated 28 Sept 2026
Crystal Guardian is a tower defense game featuring survival and time control elements. Defend the crystal against enemies from different biomes every night, and during the days, gather resources from various biomes to alleviate hunger and thirst, aiming to survive until the 100th day.
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Price history
Indie, Strategy, Early Access · 2024 · More under £5 games
As night falls, lead your defenses against diverse enemies in Crystal Guardian. Daylight brings new challenges as you gather essential resources to sustain yourself through the perilous 100-day ordeal.
About this game

The Crystal Guardian game is a tower defense game based on strategic elements of time management and tower placement according to the locations of different biomes. Every night at 00:00, different enemies emerge from different biomes and attempt to destroy the crystal. You must strategically place towers that will inflict more damage to the creature of that biome, as different enemies come from different biomes. However, remember that the difficulty of the game is not only the enemies but also finding solutions to hunger and thirst. To do this, you must explore and gather resources during safe hours in the daytime. Each biome has different resources. The game starts over when the crystal is destroyed or when you die, so try to learn from your previous games and survive until the 100th day. Good luck, guardians, in your mission!

- Strategic tower defense gameplay based on time management and biome-specific enemy encounters.
- Dynamic enemy waves spawning from different biomes every night at 00:00, posing a threat to the crystal.
- Placement of towers tailored to deal maximum damage to creatures from specific biomes.
- Survival elements including managing hunger and thirst, requiring resource gathering during safe daylight hours.
- Diverse biomes offering different types of resources.
- Permadeath mechanic where the game restarts upon crystal destruction or player death, encouraging learning from past experiences to survive up to the 100th day.


Each biome has its own unique enemies, and the towers capable of damaging these enemies vary. Tower placement forms the foundation of the game. As depicted in the visuals, an enemy from the Snow biome takes more damage from a Fire tower compared to an Ice tower. However, when you create a new biome, an enemy from the Desert biome might appear, and in this case, the situation reverses.


You can place the map anywhere you like, and these maps are randomly selected from 11 different versions of each of the 4 biomes every time. Resources and enemies can vary in each version. However, remember that while each map signifies new resources, it also means more enemies every night. Therefore, when placing the map, consider the positioning of your towers and the crystal you need to protect.
System Requirements
Will my PC run this? →Minimum
- OS *: Windows 7 SP1 or newer
- Processor: 2 GHz dual-core processor or better
- Memory: 2 GB RAM
- Graphics: DirectX 10 compatible graphics card or OpenGL 3.3 compatible graphics card
- Storage: 500 MB available space
Supported Languages
Latest news
Patch NotesOfficial
Update 0.2 Patch Notes
Changes The process of replenishing stamina will now use orange crystals instead of green crystals. (This is to make it easier to place more towers and make it more difficult to increase the range of towers) Trolls now drop 500 crystals instead of 250 green crystals when they are killed. The starting amount of green crystals has increased from 500 to 1000. The health of Poison, Fire and Ice towers has been increased from 100 to 150. Additions Biome Balance: It is possible to make the game easier by placing more than one biome in a single direction. A biome balance system has been added to prevent this.Read full article on Community Announcements (Solomon Kane)Patch NotesOfficial
Update 0.1 Patch Notes
CHANGES Crystal Transformation 50 red crystals are now required to transform into 50 green crystals instead of 100 red crystals. 50 red crystals are now required to transform into 50 orange crystals instead of 100 red crystals. Tower Costs The Poison Tower, Fire Tower, and Ice Tower now cost 100 green crystals instead of 125 green crystals. The Void Tower now costs 200 green crystals instead of 250 green crystals. Tower Range Upgrade Value The range of all towers is now increased by 0.50 instead of 0.20 when upgraded. ADDITIONS Crystal Totems A single type of totem has been added for now. Totems appear every 5th hour of the day, and if they are not destroyed, the enemies become stronger.Read full article on Community Announcements (Solomon Kane)






