Stemmies™ is a groundbreaking biological simulation. Command a fully voiced, AI-driven Chief Medical Officer with a DLC, manage a sprawling 2.5D bio-punk city, harvest cellular resources, and manipulate a live stock market fueled by ATP.

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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?

“Stemmies™ is built on a custom-engineered, server-authoritative framework (TitanEngine™) featuring real-time kinematic physics, a live simulated economy, and deep neural AI integration. Because the game's ecosystem is entirely dynamic from the bio-market stock prices to the autonomous AI behaviors of your Chief Medical Officer we need real player data to balance these deeply interconnected systems. Early Access allows us to refine the Vanguard Exchange economy, expand the procedural A-Life ecology, and shape the future of the Microverse directly alongside our community.”

Approximately how long will this game be in Early Access?

“We anticipate the game will remain in Early Access for approximately 1 to 2 months. This timeline gives us the necessary runway to introduce new biological zones, stabilize the live economy, and implement community-driven features without compromising the stability of our custom engine. The exact duration will depend heavily on player feedback and the scope of newly discovered mechanics.”

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

“The full 1.0 release is planned to feature a vastly expanded Microverse, complete with deeper cellular biomes and more complex pathology outbreaks. We aim to introduce additional autonomous staff types (Interns), expanded architectural properties for the real-estate market, more advanced AI integrations for the Chief Medical Officer, and a fully realized endgame bio-economic loop. The UI, Lidar physics, and overall engine polish will also undergo continuous refinement.”

What is the current state of the Early Access version?

“The core TitanEngine is fully operational and highly polished. Players can currently explore the Macroverse, physically interact with the UI using our proprietary Lidar system, shoot kinematic projectiles, and command the fully voiced, AI-driven Chief Medical Officer. The base Vanguard Exchange economy, real-estate purchasing, and procedural ecology (dynamic weather, avian flocks, and insect life) are active and functioning. While the foundation is solid, players should expect balance shifts as the live economy is stress-tested.”

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

“Yes. We are offering the game at a lower price during Early Access to reward our foundational players who help us shape the simulation. The price will increase upon the full 1.0 release to reflect the expanded content, features, and server infrastructure costs.”

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

“Community telemetry is the lifeblood of this project. We will be actively monitoring the Steam Discussion boards and engaging directly with our players. Because the game features a live economy and autonomous A-Life, player actions will directly influence how we tune the TitanEngine. We plan to issue regular diagnostic logs, detailed patch notes, and transparent roadmap updates to ensure players are fully involved in the evolution of Titan City.”
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Planned Release Date: Oct 19, 2026

This game plans to unlock in approximately 2 weeks

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About This Game

BIOLOGY IS THE ULTIMATE SANDBOX

Welcome to the Vanguard Initiative. STEMMIES™ is not just a medical simulator; it is a living, breathing kinematic ecosystem that exists directly on your screen. Powered by the proprietary TitanEngine™, you are tasked with managing a complex biological metropolis, tracking pathogen vectors, and building an unstoppable medical empire.

  • Bio-Economic Domination: Trade rare bio-assets on the live Vanguard Bio-Exchange. Watch the real-time ticker to buy, sell, and fund your pathology labs on a fluctuating market.

THE SUB-VERSE: CELLULAR PHYSICS

Execute the seamless zoom protocol. Dive straight from the macro-level skyline of Titan City down into the microscopic cellular void.

  • Live Hemodynamics: Manipulate the bloodstream directly. Use the Hose Tool to spray Red Blood Cells, carefully managing oxygenation levels in real-time to keep the host stable.

    • Cybernetic Navigation: Pilot the Class-5 Proteus Nano-Sub through hostile macroscopic blood vessels. Rely on your synthetic lipid hull to successfully spoof the host's MHC-I recognition system and avoid drawing immune fire.

    • Lethal Immune Swarms: Evasion is critical. If your 1000 HP armored hull is breached by stomach acid or kinetic impacts, the sub is instantly flagged as a foreign antigen—triggering a massive, lethal swarm of Macrophages and Neutrophils that will hunt you down.

  • Chemical Synthesis: Access the Chemical Lab to build complex synthesis pipelines, creating and adjusting vital biological substances to fight off mutations.

  • Dynamic Vitals: Monitor your patient's survival through live EKG/EEG minimalist readouts that react instantly to your interventions.

OPTICS, ACOUSTICS & KINEMATICS

The TitanEngine natively simulates advanced physics, turning the human body into a tactical puzzle.

  • Tactical Optics: Deploy the Light Tool and surgical emitter nodes. Cast lasers that physically bounce, refract, and interact with biological geometry.

  • Acoustic Awareness: Utilize the Nautical Acoustic Awareness (NAA) system to "see" audio waves, tracking unseen pathogens through dense tissue.

  • Newtonian Controls: Master left and right-hand Newtonian physics for precise arm positioning, allowing for complex kinetic manipulation of the environment.

YOUR DIGITAL WORKFORCE

You do not have to manage the outbreak alone. Build and manage a team of ambient AI personnel to run your pathology labs while you focus on the sub-verse.

  • Cross-State Ambient AI: Utilize the integrated Bio-Exchange to purchase digital personnel assets—your Interns. Watch as they exist natively within your 2D menus, then seamlessly drop into the 3D physics simulation with fully autonomous pathfinding to assist your CMO.

  • Live Asset Trading: Interns are a vital workforce, but they are also a commodity. Buy rookie interns on the Vanguard Exchange, put them to work cleaning bio-waste and running logistics, and resell your experienced assets on the live market for a massive ATP profit.

EPIDEMIOLOGY & BLACK MARKET TACTICS

You cannot cure what you cannot track. When standard Academy protocols fail, you must turn to the Vanguard Black Market to procure illicit, high-tech tracking equipment to map the outbreak.

  • RFID Dart Deployment: Equip specialized Black Market darts and utilize your tactical HUD to compensate for gravity and wind speed. Land precision kinetic shots on moving biological targets to establish a live telemetry link.

  • Track Avian Lineages: The pathogen does not just infect individuals; it spreads through generations. Tag infected crows and use your Lidar systems to track entire avian families, monitoring their complex roosting behavior and flight paths across the macro-city grid.

  • Isolate the Vector: By cross-referencing RFID flight data with environmental droppings and insectoid swarms, you can trace the mutation back to Patient Zero and deploy targeted biological countermeasures before the infection goes critical.

BOTANICAL ENGINEERING & GENETICS

The macro-city's survival depends on the synthesis of complex organic compounds. You must cultivate rare flora in the Botanist Lab to supply your chemical pipelines and pharmaceutical research.

  • The Genetics Profiler: Every plant has a biological history. Cross-breed strains and track family trees across generations (G-01 to current), monitoring Max Canopy potential and intricate lifecycle stages.

  • Live Soil Telemetry: The ecosystem dictates what can survive. Monitor live Soil Uplink data—including Hydration, pH levels, and Toxicity—to maintain the perfect chemical balance before your investments wither.

  • ATP Acceleration & Harvesting: Cultivation is a hands-on science. Inject H2O manually, prune leaves to optimize health, or spend your harvested ATP to artificially boost cellular growth cycles before foraging the pollen yield.

YOUR NEURAL COMPANION & DESKTOP MATRIX

Experience a seamless blend of UI and gameplay. Our Kinematic Lidar system turns your menus into physical, interactive platforms.

  • Desktop-Aware Physics: Drop your Chief Medical Officer (CMO) onto a UI panel and watch him physically navigate your settings menu.

  • Live Telemetry AI: Driven by the Vanguard Neural Core, your CMO monitors your ATP balance, hardware limits, and what you are interacting with (Enhanced via DLC).

  • Fully Voiced: Dynamic Text-to-Speech brings his logical or panicked personality to life, reacting to your successes and catastrophic lab failures (Enhanced via DLC).


    Whoo hooo!
    I hope you like the game it has taken lots of work.  Please give it a try.  Lenn Dolling

AI Generated Content Disclosure

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

Live-Generated AI Content:
This game features a custom, offline neural network architecture running entirely on your local hardware. It utilizes safe, locked base models to procedurally generate dynamic NPC dialogue and ambient acoustic elements in real-time. Because it runs locally, it ensures zero server lag and complete player data privacy. No external web scraping or online APIs are used.

Guardrails:
All AI models operate within a strictly locked, offline sandbox. Dialogue generation is heavily constrained by strict, character-bound system prompts (Hermes 3) to ensure NPCs remain safely in-character as clinical personnel. The game utilizes no external APIs, preventing malicious web-based prompt injections. Finally, players have full access to the standard Steam Overlay tools to easily report any unexpected dialogue outputs directly to our development team.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit
    • Processor: Quad-core Intel or AMD processor, 2.5 GHz or faster
    • Memory: 8192 GB RAM
    • Graphics: Dedicated GPU with 4GB VRAM
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 20000 MB available space
    • Sound Card: DirectX Compatible
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 / Windows 11 64-bit
    • Processor: 6-core or 8-core processor, 3.0 GHz or faster
    • Memory: 16384 MB RAM
    • Graphics: Dedicated GPU with 8GB+ VRAM
    • DirectX: Version 12
    • Network: Broadband Internet connection
    • Storage: 30000 MB available space
    • Sound Card: High-Fidelity DirectX Compatible
    • Additional Notes: 8GB+ of VRAM and a high-speed NVMe SSD are strongly recommended for optimal cognitive generation speeds
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