Hard and endless mode do speed up. The connection to the theme is explained in the game page details. Thank for taking the time to play :)
Thanks for the info, I'm glad there's difficulty options. I probably should have looked around a bit more before commenting
no worries 😀. The speed up is relatively slow because we didn't have much time to balance it so understandable why it could be missed and who reads the details section anyways lol 😆