Sorry, I hadn't had enough time to properly test this game, especially in non chromium browsers.
The game has some known bugs đŁ if you flip too many times, the image will have small visual artefacts that prevent player from completing a level (that's what Vykri had in his stream), probably because of wrong numbers rounding. Music had to start right after the game starts, so it's also a bug :(
About the responsiveness, I created it on 16 inch laptop and made some css tweaks for smaller screens in the last minute, so there are problems.
Anyway, thank you very much for playing and giving honest feedback!