Thanks for the detailed feedback! Because I was the one who made the game, naturally I knew that the black dots were not interactable until the resizing mechanic was introduced, but I did not consider how much this would confuse new players-- that was an oversight on my part. I also have little experience in the audio aspect of game design (my last entry to GWJ, which is also my first ever game jam entry, basically had no audio), and I did try to compose some BGM but couldn't finish it in time (in retrospect I should've use a royalty free BGM instead). As for the visuals, I agree that there should be a high contrast mode, and as for fullscreen mode... I just realized that you could enable that in the settings :> Will keep that in mind when I publish more games on itch.io in the future.