Was there ever a Cabol I? I would think so, but I found no trace of it. There is a Cabol III, which has about twice the download size, but all the download links I found were broken.
At first look, Cabol II may look like some sort of Breakout clone, but that isn't quite correct. You do have a paddle you can move horizontally, and there are bouncing balls, but that's where the similarity ends.
The balls can land in one of the two internally lit trash cans at the sides of the screen. That is good, because this is the only thing that scores you points. The balls could also hit the long bar at the center. This is bad, because they will push it down (everything in the game more or less obeys the laws of physics), and once it's down all the way, the game ends.
Later on you get different balls (cabols), and you get goodies you can catch with your paddle. These might give you extra points, or enlarge your paddle, or do other welcome things. All in all Cabol II is an awesome arcade game, not least because of its exceedingly well done graphics, but you have to run it on the right hardware for full enjoyment.
The inclosed readme is remarkably taciturn on this subject. From my experiences, the game needs a 68040 or at least a very fast 68030 to run well. It seems to prefer the system 7 family and will be less stable on older or newer systems.
Under system 7, you need to set your monitor to 256 colors, else the display will be completely mangled. On OS 8, it will run under thousands of colors as well. For purely optical reasons, you should set your monitor to 640×480 as well. In detail, these were my experiences on various systems: