
A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?
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About

A combination RTS and base builder with a brand new kind of enemy, the Calyx are a group of powerful plant-aliens that, left unchecked, quickly spread to control swathes of the map.

As the only remaining occupant of an Avaris Corporation deep-space mining vessel, you’ve arrived in orbit around a barren-looking planet. While you’re trying to get over being frozen for more than a century, you’re dropped to the surface as the ship’s AI outlines your Ore mining targets.
Build a power network, set up Harvesters and refine Ore before sending it to orbit for Credits. Build walls and turrets to protect your base. Deploy tanks and artillery to push the Calyx back before it gets too strong.
Balance your base’s energy requirements carefully to avoid vital defences being down on power.
Secure rare deposits to improve your mining and military capacity. Connect to booster buildings for additional power, mining and healing buffs.

Will you establish a strong defence, or attack the Calyx before it spreads too far? Dig in and build a massive force, or adopt a mobile and nimble strategy? There are many ways to defeat the different varieties of Calyx. Start your base wherever you like, experiment and develop your styles of play, and learn to cope with different scenarios.

Protect Data Archives to gain Research Points, and use the tech tree to unlock and upgrade more advanced units and buildings. Unlock the Inferno flamethrower and watch the Calyx burn! Build the Unit Workshop and manufacture the Goliath, a massive, multi turret tank, and boost its speed with hover technology. Unlock Orbital technologies and fire a devastating laser beam from orbit.

Protect and power communication arrays to access the corporation’s deep space network. Scan the Calyx roots to learn more about how these hostile lifeforms function. Discover new and dangerous Calyx variants as you battle to gain control of the planet and try to find a way home!

Tutorial plus 16 maps
5 difficulty levels
Tech Tree
Earn Research Points and unlock new technologies
Upgrade units and buildings
Take on 5 species of Calyx
Watch out for the evil Liquidator AI!
7 maps
5 difficulty levels
Set the number of Calyx roots
Choose starting resources
Configure available Ore fields
Choose your tech level and generate a layout
Share the seed with friends so you can play the same challenge



Calyx is an Early Access release, and we’d love to hear your thoughts to help shape future development.
Please jump into the Discussion Forum, or join our Discord and let us know what you think!
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese
Engagement
Hours played at review time, across 48 reviews with recorded playtime.
Reviews
Themes across 48 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
Good combination of simple and satisfying. There's a few UI issues where the requirements of building certain things isn't super clear, but otherwise there's not a lot wrong with this. Two thumbs up.
GOOD
Fun little game. This has great potential. I am glad to support the early access period
1. 게임이 너무 느림. 캠페인만 하는데, 매 판마다 업그레이드가 리셋됨. 2. 경제가 골드와 광물로 쪼개져있는데 덕분에 자원의 충당 속도가 너무 느림. 3. 정석적인 조합으로 천천히 밀어내는 것 외에는 공격의 수단이 전무함. 어떤 스팸이나 속도전 같은 건 시도조차 못함 4. 포가 쓰레기. 너무 느리고 사거리가 짧고, 위력도 없음. 존재의 가치가 없음. 근데 안쓰면 존나 힘듦. 5. 모든 유닛이 비쌈. 업글도 개비쌈. 이게 2번 문제랑 맞물려서 매판마다 존나게 느린 게임을 해야함.
Entretenido. Un nuevo concepto de enemigo.
Great RTS game. Highly recommend.
One of my favorite RTS games, really nothing like it. maybe creeper world if you count that
9/10. 07/07/2026 O jogo se encontra ainda incompleto, mas que gera muita horas de diversão, principalmente com a chegada da nova att naval que dá ao jogo uma nova essência de gameplay. Eu recomendo que joguem apesar do acesso antecipado, foi bom dialogar com os ♥♥♥♥♥♥♥ no discord oficial do game, conversando sobre a nova att e como corrigi-la em certas partes.
Can build on beaches again.
Is REALLY good
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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