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Calyx
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 With only an out-of-date AI for company, can you survive?

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Features
Single-player
Family Sharing
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Languages:
Interface Full Audio Subtitles
English ✔
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Italian ✔
German ✔
Spanish - Spain ✔
Japanese ✔
Korean ✔
Portuguese - Brazil ✔
Russian ✔
Simplified Chinese ✔
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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We’re a small team, and we’ve worked on Calyx for some time already. We believe the game already offers an entertaining mix of basebuilding, combat and storyline, but there are still mechanics, systems and features missing to make it fully rounded. By offering Calyx to a larger audience before full release, we can receive essential feedback to help us build out the experience and make the final game the best it can possibly be.”

Approximately how long will this game be in Early Access?

“Our current estimate is between 6-12 months.”

How is the full version planned to differ from the Early Access version?

“We want to deliver more unit types, more enemy types and more environmental biomes. We also want to work with the community to assess balancing and to understand which quality of life features to prioritise. We plan to roll all these additional features into the next chapter of Calyx’s campaign.”

What is the current state of the Early Access version?

“The current Early Access version has a campaign with a tutorial and 16 maps. It has a Skirmish mode with 7 maps and a Challenges mode with a further 9 maps. We've already implemented a lot of quality of life features, the game is free from serious bugs, and performance is in a good place.”

Will the game be priced differently during and after Early Access?

“It's likely the price will rise slightly for full release, when Calyx has more content and features.”

How are you planning on involving the Community in your development process?

“We’ve already involved the Community in the development of our demo over the course of 2025. We plan to continue the process of carrying out regular play tests with player surveys. We also have a Discord where we actively have discussions with our players.”
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Download Calyx Demo

This game is not yet available on Steam

Planned Release Date: Jan 29, 2026

This game plans to unlock in approximately 10 days

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Reviews

“Calyx Review - It's looking really good. It's a bit like Dune 2 and C&C except you fight plants :)”
Worth A Buy

About This Game

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!

Take on the Early Access campaign:

  • 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!

Replay with Skirmish mode:

  • 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!

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: Intel Core i5-3570 or AMD FX-8350
    • Memory: 8 GB RAM
    • Graphics: NVIDIA GeForce GTX 1050 Ti, 4 GB or AMD Radeon R9 380X, 4 GB
    • DirectX: Version 11
    • Storage: 4 GB available space
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: Intel Core i5-10400 or AMD Ryzen 5 3600
    • Memory: 12 GB RAM
    • Graphics: NVIDIA GeForce GTX 1660 Super, 6 GB or AMD Radeon RX 5600 XT, 6 GB
    • DirectX: Version 11
    • Storage: 4 GB available space
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