Heya! I just finished playing the web version a little bit and I really like the game! The only performance issue is that the game window resolution on the web version is super big, so I either had to toggle fullscreen or zoom out my browser a bit to make the game fit my screen. Otherwise, it runs very smoothly.
I like the music and the visual style. I also like your take on the theme of strange places. Movement is very smooth and responsive too! I had a little trouble figuring out where to go at first, but then I realized I'm supposed to avoid the dark spots instead of jumping into them lol