Neither good or bad
Hmm... you can't win, lose or do anything but to move the green dot around the screen.
Also, the blue ball appears always in the same places.
And I could not understand the meaning of the rectangles.
Last but not least, it's a bit of an overused concept.
Put some challenge in it, powerups and such.
Right now it's just a small pointless funny flash, but you can make it into a game.