
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 With only an out-of-date AI for company, can you survive?
Modeled estimate, not a reported figure. How we estimate →
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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
This game makes feels my autistic brain with endorphines. Great fresh new concept, very satisfying to destroy the calyx over time. This game is already good, cant wait for v 1.0
Хорошая стратежка, затягивает. Противник хоть и туповат, но с бесконечными ресурсами
Awesome little strategy game, nice and relaxing. Fun mix between RTS and Tower Defense. Nice Variety of Enemy units and growths that need to be destroyed, leads to varied gameplay.
Unforgiving and fun if you have the patience to restart your game a few times. That is the way this game is designed. You learn and restart to perfect your strategy. It does work well. Completing missions does feel rewarding. This game is definitely good and will get better. Worth every penny if you are a Creeper World fan, but this game does carve out its own genre, a bit different than creeper world. It could be better if the devs finish the game well. So far it's 9/10
Definitely a great RTS Tower Defense Builder. I thought for sure I was not going to like the fact that it gives you different levels to work with and not a persistent open world survival type approach, but the levels are actually well thought out and just as strategic as Factorio, (even more so due to the overwhelming growth of Calyx, rather than the wave approach from Factorio. I would eventually love to see a persistent open-world design where there is "Alpha Calyx" plants on the corners of the map that you cannot eliminate, but you CAN contain if you have the means to do so. It would obviously mean that each alpha Calyx can only grow so far, but spawn the newer spawn calyx that CAN be eliminated. Kinda like a domino effect, or rather, the MOBA base design where you have to go through smaller bases to get to the main base. Definitely recommend this game if you're a fan of RTS, Tower Defense, Strategy Builders, or similar(ish) games like Factorio, the Rift Breaker, etc.
very
Fun spin on RTS. Simple, but good story. Good mechanics. Well designed art and models. My ONE issue is that the difficulty option is just a damage reduction modifier. I can understand why the devs went with this mechanic, but wish they had done anything else.
not tooo base buildy, very much about tactics. perfect game to play while listening to a podcast or youtube
Worth a buy! Very Enjoyable.
good game
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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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