You won't believe this: it _is_ playable on mobile! I see a lot of people playing this on their phones and iPads.

I contemplated adding gyro controls, like in "Marble Blast Mobile" from back in the day, but they are very imprecise and don't really scale well to high-level play. With the current d-pad controls, there's actually a mobile player who holds the world record on many levels. Never would've expected mobile controls to scale this far.

Gyroscopic control might be even more suited for something like Neverball where the physics are based on tilting the board. In Marble Blast the board was stationary but the ball could be moved by acceleration which turns out to be quite different in terms of controls.