I plead guilty. I did a change from arrow keys to WASD in the very last moment of yesterday because I couldn't solve the problem that arose (of course) when my "very custom engine" HTML5 game was played in an iframe on itch (I'm new to this place, should have registered earlier to be able to test out the problems). That is, of course the browser interprets the down key as scroll down the page. But I see that the Unity engine has been able to overcome this, so it should perhaps hopefully be possible for me to remedy the problem to allow arrow keys again, once the competition is over, that is. Sorry for the inconvenience.