Lovely game and theme!
My first playthrough was on Chrome. I got past the press any key at the end and saw that there were still other things for me to find... so I played again, but I now can't see the ending! I've played through it several times on three different browsers (Chrome, Edge and Firefox) and can never get past the 'press any key' at the end. I just updated Firefox and now it won't load the game... I'll come back in a few days to see if I have better luck!
The graphics are really cute, but they only showed up on my first playthrough (I'm guessing this is browser-dependent too).
My favourite puzzle was the bit with the dragon :D