This game is way better than it needs to be for a quick burst of advertising. Not only is the implementation fantastic, with perfect controls, but the level design is also great. I really enjoyed the multiple routes and the fact you can skip most of the advertising displays.
It seems such a shame that this isn't a full game. Removing the advertising and adding more complex levels with puzzles would make for a perfect little distraction.
> Not only is the implementation fantastic, with perfect controls, but the level design is also great.
I was surprised how well the WASD controls worked. Perfectly intuitive.
Mobile control smooth as well
I even triggered a back gesture by accidentally swiping from the edge when I merely wanted to move the marble, bringing me back to this HN page, assumed state was lost, but found the browser's forward button and it was like it never happened! I've never seen that in a browser-based game.
I did spot one control bug, which is that if you start holding down a key while/before spawning in, it won't register.