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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 With only an out-of-date AI for company, can you survive?
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.
“TL:DR good game but Ai needs balancing Ok, im going to give this a positive review because I want to support the dev, and I am enjoying the game, but I do feel the game needs a LITTLE tweaking. Mainly, the enemy AI faction. Not the plant faction. My main gripe is that the Ai…”
— a player, Steam review · 17 hrs played“I Absolutely Love this game! If you're a Fan of oldskl C&C or Creeper World... You'll Love this game!!!! I've just purchased the game and played the first 5-6 levels, but to be crystal-clear, I was previously providing feedback within the "Play-tests" that I signed upto,…”
— a player, Steam review · 64 hrs played“Love the game concept and the aesthetics but one glaring issue exists. The balance is whack when it comes to the Artillery Calyx. On mission 5 you already get 2 of them on the map and they just destroy any tanks in like 2~3 shots on normal difficulty. Even the bulky tank. At…”
— a player, Steam review · 5 hrs playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-08 via SteamCharts.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-09-26. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
There’s something in the air! Calyx development update – August 2026
Greetings Calyx players! Today we’re sharing some of our progress on the next major update to the game. Prepare for take-off We’re adding airborne Calyx and player units so you can bring the battle to
Calyx v0.2.0.4 – Leviathan Update, minor patch
Greetings Calyx players! Calyx v0.2.0.4 – Leviathan Update, Minor Patch Hi everyone! We've got another small patch today, bringing the following changes: Added different models for the different types
Calyx v0.2.0.3 – Leviathan Update patch
Greetings Calyx players! Calyx v0.2.0.3 – Leviathan Update Patch We'd like to say a massive thanks to all the players who've given us feedback on the new update via Discord and the Steam Forum. We've
Assemble your fleet! Calyx v0.2: The Leviathan Update is now available
Greetings Calyx players! We're delighted to announce that Calyx v0.2: Leviathan Update is now available to install. This brings the next chapter of the campaign, naval units to build, and a new ocean
Take to the seas and battle the Fathom – the Leviathan Update Playtest is live!
Greetings Calyx players! We're excited to invite you to take an early look at our upcoming Leviathan Update, including a new ocean biome, the Comet and Broadside fighting ships, the Ark naval transpor
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-09-25.
| Genres | Strategy, Early Access |
| Player tags | Early Access · RTS · Base Building · Strategy · Sci-fi · Management · Tower Defense · Resource Management · Action RTS · Colony Sim · Outbreak Sim · PvE (Steam store community voting) |
| Features | Single-player · Steam Cloud · Family Sharing |
| Languages | English, French, Italian, German, Spanish - Spain, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese |
Minimum system requirements (PC)
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