Hi, since the jam page states that the controls are "Keyboard only", I would like to ask if is allowed to support touchscreen controls to allow the game to be playable on smartphones and such.

The two ways I could think of implementing on touchscreen is maybe by adding on-screen buttons within or outside the game screen or by replicating the numpad somehow as a frame.

Is it fine to do so? And if it is how could be the optimal way to do it?