|The third and final arcade outing for Bub and Bob (not counting the 'Puzzle Bobble' series), Bubble Memories returns once more to the classic, single-screen gameplay of the series' legendary first outing. Graphically, the game is very similar to 'Bobble Bobble II', released a year earlier; the only real visual difference between the two is the latter game's use of some rather charmless digitized animal photographs that form the game's backdrops.|
One new gameplay addition, however, is the introduction of 'Super Bubbles'; There are now two sizes of bubble. Hold down the bubble button for about 1 second until you glow to produce a giant bubble. This giant bubble can trap either a single large enemy, or several smaller enemies. This replaces the 'Multiple Bubble' facility of the previous game in the series; 'Bubble Bobble II'.
Game description from www.arcade-history.com