Collect
Gather quarks in red, green, and blue color charges.

A fun, strategic card game powered by
the building blocks of everything.
Play by the rules that built the universe.
The smallest pieces. The biggest strategy.
No physics degree required. Learn the core loop in three moves, then discover how deep the universe goes.
Gather quarks in red, green, and blue color charges.
Combine three compatible quarks into protons and neutrons.
Construct nuclei, disrupt rivals, and score the most stable matter.
Playable prototype
This compact solo challenge demonstrates the game’s central idea. Select three quarks and bind a proton or neutron.
Swipe to explore all five quarks
Built by curious people
Hold On To Your Hadrons turns the strange beauty of particle physics into choices you can hold, combine, steal, and defend. We’re developing it in public—testing the strategy, refining the science, and inviting players into the process.
Development transmission
Playtest invitations, new card art, and meaningful project updates—sent occasionally.