As previously mentioned, the game is too loud. If there were a desktop version, at least the issue could be fixed via Windows/Linux settings. The mute button (C) didn’t work for me, unfortunately.
About the game itself: I personally really like the simple visuals and minimal explanations, as it encourages the player to experiment and figure things out on their own. However, the controls should at least be visible at the beginning. Unfortunately, the number combination puzzle lost me.
The sound design is completely missing, which is a shame. Considering that the game was one of the first submissions and the time between the start of the jam and submission was relatively short, I still think it turned out somewhat decent. Still, it's a pity – it had the potential to be so much better.