OK I figured it out.

When you pick a number (0-4) thats how many squares around it that it chooses, each of those new numbers picks another square equal to the number shown. It CAN go backwards, so it can go back to the one you just chose, so if you get a 1 it can go back the way it came and lock off that area for you.

That being said, just pick any 4's and hope for the best. You get higher points when you unlock more around a number :P

Not very good. All you do is press a block with a number and hope that it spreads across the gameboard like an infection. No sound at all.

THERE'S NO GAME HERE!! (and yes, I was shouting that)

This is not a game, this is a random number generator.

This is a nice take on an old concept, however it falls short for a few reasons. 1) The graphics are a little dull and the animation is slow and uninteresting. 2) There is not real strategy as I can see, since you can only see one number at a time and the board is too big to get an accurate estimate of how things will spread. 3) Becomes repetitive after only a few plays. Solid game, overall, but nothing spectacular.