Primecraft
A distributed simulation engine for procedural worlds and embedded neural agents — delivered as a playable game across mobile, desktop, and the web.
Alpha v0.30.0 — Model Sharing Patch
What Is Primecraft?
More than a game — it's an experimental engine exploring AI, physics, procedural generation, and distributed gameplay.
Primecraft is an experimental, physics-driven sandbox built on top of a custom simulation engine. The game blends procedural world generation, real neural-network AI, player-driven construction, and multi-device gameplay.
- Explore billions of procedural planets — each deterministically generated from its coordinates
- Train on-device neural networks — companions that learn and evolve with you
- Drop into bubble scenes — mini 3D levels loaded directly from the web
- Build or import levels — using a simple JSON-based scene format
- Couch co-op & LAN sync — play together on one device or across your network
- Physics-driven gameplay — destructible objects, planetary gravity, and dynamic abilities
- Fully offline — including AI training, no cloud required
Core Gameplay Features
Experience a unique blend of exploration, creation, and AI-driven gameplay.
Procedural Universe
Navigate through billions of unique planets, each with distinct terrain, resources, and environmental conditions. Every world is algorithmically crafted for endless exploration.
Neural AI Companions
Train real neural networks directly on your device. Your companions learn from gameplay, developing unique behaviors and abilities through our LOOM AI framework.
Physics Sandbox
Experience realistic planetary gravity, destructible environments, and physics-based abilities. Every object in the world responds to forces and collisions.
Bubble Scenes
Discover and enter bubble scenes — self-contained 3D levels created by players and loaded from the web. Play puzzles, challenges, and custom worlds.
Multiplayer Experiences
Play couch co-op on a single device or sync across multiple devices over LAN. Online multiplayer and server-hosted worlds are in active development.
Level Creation
Build your own worlds using the web-based editor. Export as JSON and share with the community, or import others' creations into your game.
Under the Hood
Primecraft is built as a cross-platform simulation engine, not just a game.
High-performance physics, rendering, and input handling for mobile and desktop builds. Optimized for real-time simulation with thousands of entities.
Scene editing, constraint systems, and AI tooling that runs directly in your browser. Biocraft shares the same scene format for seamless interoperability.
Engine Capabilities
- Deterministic Planet Generator — 8–15 billion reachable locations with consistent generation
- Embedded Neural Runtime (LOOM) — native C++ inference for on-device AI
- AI Training Layer — movement, control, and companion behavior learning
- Authoritative Multiplayer — server architecture in development
- Web-Based Scene Editor — create puzzles, levels, and simulation experiments
Frequently Asked Questions
Both. Primecraft is a fully playable game, but it's also an experimental engine exploring AI, physics, procedural generation, and distributed input systems.
Each companion uses a real neural network running natively on your device — no cloud, no external servers. You train them through gameplay inside bubble scenes using our LOOM framework.
No. All AI models and training stay entirely on your device unless you explicitly choose to export or publish your scenes and models.
The coordinate system supports over 8 billion unique planets. Each one is deterministically generated from its grid location, ensuring consistency across sessions.
Absolutely! Use the web-based editor to create scenes, then load them directly into the game. Levels are stored as human-readable JSON files.
Couch co-op and LAN play are available now. Online multiplayer with server-hosted bubble scenes is actively in development.
By design! It's a physics-first sandbox with experimental AI. The emergent chaos is part of the experience — players are encouraged to break things creatively.
Who Is Primecraft For?
Built for curious minds who love experimentation and creative chaos.
Love physics sandboxes and chaotic emergent gameplay
Train neural networks in a real-time environment
Build 3D worlds without complex tools
Explore embodied AI and procedural ecosystems
Discover a weird, beautiful universe to mess around in
Join the Universe
Start building, training, and exploring today. The cosmos awaits.