Oops! That'd be my score then! Okay, I've properly mastered what's going on now and turned things up to level 11 with 95 points. Hurrah! I was never any good at Klax :D
Some other feedback then: I got a bit of keyboard claw with the controls - maybe something like 'DF JKL' for the rows would work better?
Edit: in the WebGL page when non-full screen the score and level counter drops down a row, that's why I got confused :)