From a reader:

Thanks for the link to this! It -is- horrifically addictive.
I’ve managed to get 7000+ about 4 times now, so I think I’ve figured out the “trick”. I’ll take it from the top, so that someone who hasn’t played it at all can get it.
There’s two counters on the top left. The top one (starts at 30) is the number of babycals you’re going to get crossing the screen. This number decrements – and you get another babycal on the screen – about once every two seconds. The bottom counter is… well, I’ll get back to that one, cause I’m not sure yet.
The way to score points are as follows:
1) Knock a bottle up and have it hit another babycal’s head, and it runs off the screen. That’s a meager 10 points. If that’s all you do, you’re doomed.
2) Knock a bottle up, have it hit another babycal’s head, it -tries- to run off the screen, but you hit it again with another bottle. That becomes 20 points. Hit the same one -again- and it’s 30 points. If it finally manages to get off the screen, the sweet part is that it adds another babycal to the top counter for every time you hit it beyond the first (meaning you’ll have more babycals crossing the screen for you to play with, extending your game) and it’ll subtract 1 from the bottom counter that starts the game at 100.
3) Hit more than one babycal at a time. That adds something like a 25 point bonus.
4) The “trick” is to get -both- of these going at the same time. Hit two or three babycals, have them all up and running -together- to the other side of the screen, and hit all 3 again… sending them scurrying back to the other side, where you hit them -again-. Do this a few times, and your score skyrockets. The way you’re going to get to scores above 5,000 is where you manage to get 3-6 of the little buggers running back and forth like mad, knocking them all down about 8 or 9 times. If you manage to pull this off, you not only increased your score a lot, but you’ve just massively extended your game time (say you manage to get 4 of ‘em together and knocked ‘em back and forth about 8 times. That means, when each one runs off the screen, they’ll each add 7 more babycals to the top counter, for a total of 28 more babycals. The highest I’ve managed to get that counter up to so far is 50, 20 more than you start the game with.
5) The bottom counter, the one that starts at 100, decrements each time the top counter increments. You may have thought, as I did, that if you managed to get that bottom counter to 0, that you’d start a new level or something. Nope. The game just keeps going, only this time you get a not-encouraging buzzing sound every time that number should be going negative. Does this mean that I’m no longer getting my top counter incremented? Not that I noticed – I -think- it’s still going up, but I could be wrong about that. If that top number isn’t incrementing once that bottom counter hits 0, then what the bottom counter does is basically limit the total number of babycals you can get in a game to 130. If the top number still does keep incrementing after the bottom counter hits 0, then I have absolutely no idea what the bottom counter is really for, except maybe as an alternative “scoring method” that maxes out annoyingly early.