In BUST-A-MOVE 4 a cute green dinosaur is under attack from colored bubbles. Armed only with a bubble-shooting machine, the dinosaur must eliminate all of the bubbles before they come crashing down around him. To make things easier, any time three bubbles of the same color come into contact with each other, they pop. As an added bonus, bubbles that are shot seek out bubbles of the same color to create chain reactions. One complicating factor is that the bubbles are steadily falling towards our little green friend. Another complication is the use of pulleys: pop the bubbles on only one side of the pulley and the other side will come crashing to the ground, ending the game. Jumping into the game is fairly easy, but putting it down is much harder. Will the green dinosaur be able to destroy the bubble menace? Play BUST-A-MOVE 4 and find out.