Game made for https://itch.io/jam/game-off-2025

Psi — named after the Greek letter ψ, commonly used to represent the wave function in quantum mechanics — is a puzzle game inspired by the concept of decoherence, where particles influence one another as their states evolve.

Your goal is to use Observers to add or remove energy from the system, guiding how the particles will eventually collapse into a final state.

It’s not a physics experiment—just an inspiration—so don’t worry! The result is a visually driven puzzle experience rather than a scientific simulation.

How to Play

• Drag the Observers into the grid slots.

• Click an Observer to adjust its potency.

• Some Observers add energy, others remove it.

• Particles with enough energy will collapse.

• Particles are influenced by their neighbors.

• You can preview the probabilities before clicking Observe to run your experiment.

Credits

Music
• “Piano Background Music” by DELOSound — Pixabay
• “Synthwave Retro 80s” by DELOSound — Pixabay

Sound Effects
• From FreeSound

Icons
• Various icons from game-icons.net

Game Design
• Me

Pixel Art
• Me

Code
• Me and Gemini