Grow colonies of fluorescent cells that mutate, swarm, and devour each other in a petri dish arena. Propagate a unique biology of your own as you compete against rival labs in a detailed artificial life simulation.

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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?

“There is still a lot that I want to add and improve, and I hope that releasing to Early Access can support development full time. Designing and balancing an emergent, procedurally generated simulation is delicate and takes the kind of time and playtesting that Early Access allows. I want to make the best game that I can and I want to build collaboratively with the community and early access can support.”

Approximately how long will this game be in Early Access?

“My goal is to keep Early Access as short as the game's quality and scope allows.”

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

“I plan to improve the UI, tutorial, game mechanics, documentation, and variety. I plan to add more authored maps to the Bionet; add more genes, biology features and mechanics; expand the organic chemistry simulation with more compounds and interactions; multicellularity; deeper viral mechanics and immune responses; more augmentations with different effects; more data analysis visualizations like graphs and charts and better ways to track your lineages; more challenging neurosymbolic rival AI; flesh out the economy simulation and other value mechanics; add more experimental features!
Full mod support is also very important to me and I will include tools to make mod creation as accessible and open as possible.
These are all just current plans but its important to me that I let the game grow into whatever beautiful thing it wants to become. I have so many ideas that I want to continue to explore, and community feedback will also have a major impact on the directions I focus on. I am just excited to build the most strange and amazing game that I can.”

What is the current state of the Early Access version?

“The core simulation runs and the game is playable. The core game loop is in place but not fully fleshed out. Players can progress by cultivating their own lineages of cells and can exhibit influence on the direction that cells evolve in. However, there are unfinished or missing features, lots of bugs, and the simulation is unbalanced; I want to ensure that every run can feel different with endless strategic variety. ”

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

“I plan on raising the price as I expand and polish the game with new features and content until the game is ready for full release.
The game will always be a one-time purchase with no microtransactions.”

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

“I'm making this game for the Community just as much as I am making it for myself. I'm lucky to be making a game in such a cool niche, as its allowed me to connect with so many cool people who share the same interests as me. I constantly engage with player feedback, discuss my goals, share ideas, and always take suggestions. I'm a strong believer in building in the open.

Mod support is also something I see as extremely important for community building. I want to open mod support as soon as possible, although while the game is still in active development it might be a challenge for modders to keep up...”
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Download Substrate: Emergence Demo

This game is not yet available on Steam

Planned Release Date: Sep 24, 2026

This game plans to unlock in approximately 2 weeks

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About This Game

Cultivate evolution as you guide your cell colonies on their territorial conquest, experimenting with mutations to find genetic advantages in a richly simulated artificial life sandbox. Engineer chemistry and intervene tactfully with direct cellular controls. Each cell has a unique genome shaping its behavior and appearance. Some hunt. Some cooperate. Many go extinct. 


Logo and background art by Daniel Nartov

No two cells are exactly the same. All mechanics are inspired by real cellular biology, emphasizing emergent complexity. Cells have functional organelles defined by their genes. Genes pass down through generations, accumulating tiny mutations until they evolve into new strains. Resources drive behavior. Interactions create emergent effects you didn't predict. Simple organic systems combine into a living simulation. 



Every mutation is visible. The cells fluoresce with life as they consume resources, replicate, and compete. Each color is a reflection of their genetic code.

Every gene mutates independently, and any cell can mutate to have any number of any gene. The only limit is natural selection. 


Every cell's behavior is driven by a miniature neural network and genetic algorithms. Nothing is scripted.

Your cells aren't alone. Cultivate them to develop evolutionary advantages and outgrow the competition. Use chemistry as a weapon. Claim zones to control the resources your rivals depend on. Annihilate them. 

Catalogue your unique strains and document their lineages. They become more valuable as they dominate the substrate, creating a growing economic engine.

Developer note:
I'm developing this solo with my background in cellular neuroscience and experience as a musician and abstract painter. All game systems, simulation architecture, visual designs, procedural art and audio designs are my own. The soundtrack is made by me with the help of a few of my friends. I write and maintain the codebase alone, using Claude Code and other agentic coding tools as my primary workflow. No art assets were created by generative AI, and nothing in the game is generated by AI at runtime.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Cell and rival-lab behavior is driven by small neural networks and neurosymbolic systems (vector-symbolic reasoning and associative memory) running in-game. These control behavior only and do not generate art, text, or other content.

AI coding agents were used during development, writing code (including procedural shaders) to human-made designs and under human review. All game design, art, music, and in-game text are created by a human; in-game text is written or edited by a human before release. No AI-generated art or text is produced at runtime.

As I am working on this solo, there may be some placeholders in the free demo that slip by unreviewed. If you find "slop," please report it as a bug and it will be fixed before release.

Machine learning is cool :)

System Requirements

    Minimum:
    • OS: Windows 11
    • Processor: Intel Core i3 or equivalent
    • Memory: 4 GB RAM
    • Graphics: Integrated graphics
    • Storage: 500 MB available space
    Recommended:
    • OS: Windows 11
    • Processor: AMD Ryzen 5 or equivalent
    • Memory: 16 GB RAM
    • Graphics: Dedicated GPU with 4GB VRAM
    • Storage: 1 GB available space
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