Quantum Chess cover
Quantum Chess screenshot
Linux PC Mac Steam
Genre: Strategy, Indie

Quantum Chess

Update! 0.1.6200

We just got another update in before Christmas!

Patch 0.1.6200:



  • Added more content to the tutorial.
  • Fixed a bug in the tutorial when clicking "Play Again" after killing the king.
  • Minor UI updates.


Known Issues



  • There is an issue with the back button on the Lobby
  • It is possible to break the AI player by using a lot of superposition
  • The AI player could be better at the game
  • The previous game state sometimes gets carried over into a new game and is reset upon starting.


Once again, thank you for all of the feedback!

Update! 0.1.6198

Thank you everyone for your continued feedback. We just put out another patch with some bug fixes, UI updates, and tutorial updates.

Patch 0.1.6198:



  • Added content to the tutorial to help explain the quantum move, entanglement, and measurement a bit better (more to come).
  • Fixed bug that prevented players from making moves after completing a game and choosing "Play Again"
  • Adjusted some times in the UI to make the result of moves and subsequent measurements more obvious.
  • Minor UI QOL updates.


Known Issues



  • Still an issue with pressing back from the lobby


We're still working on getting more content into the game and fixing bugs. Please let us know if you have any feedback!

-QC Team

Update to MAC download problem

We just made some changes that will hopefully fix the issue that was preventing some players using MAC from downloading the game. If you are playing on a MAC and previously had trouble, please try reinstalling Quantum Chess. If you still have trouble, please let us know.

Our First Patch! 0.1.6190

We just pushed our first Early Access patch to Steam. If you do not receive it right away, please allow some time to propagate. Note, the following is not necessarily a complete list.

Patch 0.1.6190:



  • Changed time for tutorial text to 20 seconds. User input can still skip early.
  • Fixed an issue that would cause pieces to flip upside-down sometimes.
  • Fixed an issue with the chat log text stretching the full height of the screen.
  • Adjusted colors in the chat log.
  • Added version text to the Main Menu.


Known Issues:



  • Sometimes pressing back from the Lobby scene does not return to the Main Menu. Pressing back twice sometimes works.
  • Sometimes killing a player's king does not result in the end of the game.
  • There appear to be some latency issues for certain servers/regions that make it difficult to create games.
  • The host of a game currently receives no feedback if the client drops.
  • Chat tab should flash on receiving new messages.
  • The AI player is not very good at the game.
  • The tutorial does not do enough to teach the player how to play.

Working Hard

We've only been in early access for 3 hours and already have a ton of great feedback. We're working on getting some updates and fixes into the game right away. Some of these include:

- Fixes for chat UI
- Fixes for pieces appearing upside down
- Adjustments to the tutorial (timing of messages, etc.)

More is coming. Thank you for the valuable feedback!