Chain reaction cascade game

Clicking on a little tile rotates it 90 degrees.
If the edges match up with their neighbours it
starts that tile moving too. The aim is to get as
long a lasting chain reaction of movement as
possible.
click here to play
its kinda fascinating in its own way, i got
a score of 1834 after a few goes. and when you
get a big reaction going its kinda cool to just
sit back and watch it happen.