Hello everyone!
Daily Challenge Mode is very nearly ready for release, but before it's fully rolled out to all players I'd like to give it a short test period to flush out any bugs and implement any feedback you might have.
If you'd like to give the new mode a try, it's available now in the Public beta branch. To access this, first find the game in your library, and open "properties".
Then switch to the "Betas" tab and select the public beta branch from the dropdown:
After closing the popup, steam should download the correct build, but if you have any problems switching, it often helps to fully restart steam.
Please note that in the current version, it is not possible to play puzzles from days that you've missed. This turned out to be quite challenging to implement, but I may revisit it after release if it's something that everyone feels is important.
If you have any feedback, feel free to post under this announcement, or in the forums!
Mark