Build Games with Real Quantum Mechanics
A compiled C++ SDK with web and game engine integrations. Superposition, entanglement, and interference as simple game properties. Not random numbers.
A new kind of emergent gameplay
Quantum mechanics is a new playground for game designers. Superposition, entanglement, and interference are real physical laws tied to the fundamental fabric of the universe. The emergent gameplay they produce is unlike anything available from classical systems.
Structure, Not Randomness
Superposition isn't "maybe." It's all states at once, with mathematical relationships intact. Interference creates patterns. Entanglement creates correlations. The resulting behavior feels designed, but nobody wrote it.
Players Discover, Designers Don't Dictate
When quantum states entangle, they create correlations across your entire game. Players find strategies you never planned. Speedrunners exploit quantum effects you didn't know were there.
Proven in Production
Four games built on Quantum Forge. A Caltech IQIM × LCAD game jam where student teams built playable quantum games in one week. This isn't a whitepaper.
Three steps to quantum gameplay
No physics degree required. Not for you, not for your players.
Define quantum properties
Attach quantum state to any game object. A coin flip is dimension 2, a die is dimension 6. Each property becomes a qudit in the simulation.*
*The free Qutrit Edition supports dimensions 2-3. Higher dimensions available via custom builds or commercial license.
Let players shape the quantum state
Give players tools that influence state evolution: actions, abilities, or choices that apply quantum operations. They discover that their choices create interference patterns, correlations, and strategies that feel new.
Measure to resolve
You decide when the quantum state collapses into a definite outcome. Everything the player did to shape the state influences what they get.
// 1. Define: a door with 3 possible destinations const door = quantum.acquire({ dimension: 3 }); quantum.hadamard(door); // all three destinations at once // 2. Player shapes the state: using a crystal rotates probability function onUseCrystal(targetDest: number) { quantum.phase(door, targetDest, Math.PI / 4); quantum.hadamard(door); } // Player can also entangle the door with a key const key = quantum.acquire({ dimension: 3 }); quantum.iSwap(door, key, 0.5); // now correlated // 3. Resolve: player steps through, state collapses const destination = quantum.measure(door); // The key collapses too — wherever it is, it matches
Shipping games. Real quantum mechanics.
Every game below runs real quantum simulation. Superposition, entanglement, and interference drive the core gameplay, not the art direction.
Quantris
Tetris meets quantum mechanics. Blocks exist in superposition until measured. Entangle pieces across the tower. Clear lines by collapsing reality.
Play QuantrisQuantum Chess
Chess with quantum moves. Pieces exist in superposition across multiple squares. Entangle pieces, split moves, and use interference to outmaneuver your opponent.
View on SteamPonq
Quantum pong with entangled balls. Balls split and recombine through quantum zones. Phase affects trajectory. Measure to score.
Play PonqBloch Invaders
Space invaders on the Bloch sphere. Damage scales with quantum state overlap. Enemies decohere, entangle, and implement the quantum Zeno effect.
Try the DemoIn 2024, we partnered with Caltech's IQIM and LCAD to run a quantum game jam. Student teams built playable quantum games in one week using Quantum Forge.
New opportunities for emergent gameplay
Probability spreads from the center tile. Click outer hexes to add barriers. Classical probability just redistributes evenly. Quantum probability creates asymmetric pockets through destructive interference. Those pockets are the emergent gameplay.
Classical probability mixes uniformly and always settles to an even split. Quantum applies a unitary operator that preserves phase, so it never settles. Barriers reshape the interference pattern instead of just redistributing probability.
Choose your platform
The web framework is the fastest way to prototype. Unity gives you quantum mechanics inside a full production pipeline. Unreal support is coming.
Web Framework
TypeScript + WASM. Hot-reload, built-in renderer, game loop, input handling. The fastest path from zero to quantum game.
$ npm i quantum-forge
$ npm i quantum-forge-engine
Read the Docs
Unity Package
Native C# integration via Unity Package Manager. Drag-and-drop quantum components. Build for desktop, mobile, and WebGL.
UPM > Add package from git URL...
View on GitHub
Unreal Engine
The core C++ SDK works in Unreal today. We're building the engine plugin for editor integration and Blueprint support. Tell us what you'd build.
Let's Build TogetherTypeScript and C# packages are MIT licensed: wrappers, tooling, and all platform-specific functionality. The core C++ SDK ships as a compiled binary, free for applications under $100K annual revenue. Commercial licensing for larger projects is coming. Reach out and we'll figure it out together.
Build together
Quantum game design is a new frontier. The mechanics work today. The hardware is maturing fast. Start learning the patterns now, and grow with the technology into experiences that classical hardware will never be able to produce.
Chris Cantwell, founder. EE/CS/Physics at USC. Working with Dr. Spyridon Michalakis at Caltech IQIM since 2014 on quantum games, outreach experiences, and AI for quantum game states. Quantum Forge is the result: a decade of iterations on the core engine, refined by shipping real games.
Discord is home base
Ask questions, share your quantum games, get help from the community and the Quantum Forge team.
Join DiscordPartnership inquiries or just want to talk quantum game design? hello@quantum.dev
We partner with Caltech IQIM and LCAD on quantum outreach, education, and creative design — making quantum mechanics accessible through play.