Godzilla - only 500 made 1998 Sega(and there were 2 x different models as well - First 50 had 2 x flipper buttons each side with added magna save magnets (which got dropped) Mine is the later, being one of the 450 with std flippers, but retained under playfield magnets.

Viper Night Drivin - Sega 1998  - 1100 made only
Lost World Jurassic Park - Sega 1997 - 1000 to 1100 made only (figures vary)
Starship Troopers - Sega 1997 - 1000 to 1200 made only  (figures vary)
Independence Day - Sega 1997 - 1500 or less made (figures vary)

No accurate figures were set in stone with the "Showcase" Segas. Some insiders say that ALOT less than the reported "close to 1,000" numbers were even close.
After studying the IPDB serial number data bases, plus info from other machines and collectors, I can only ever find a 300 or 400 number spread on any data. Also, all my Sega machines have low production count machine numbers, so u cant verify any high numbers for the "supposed" production numbers stated by Sega etc.
Example, u will see "machine number 137". The highest number on any Sega "Showcase" I can find doesnt go past apx 400/500.

* I think the production numbers were half of what is loosely stated in most "production" number "facts" sheets. Alot of these games are absolutely well designed and great players. The fact remains that low numbers were due to a dying industry, versus machines that werent well made and designed.
Some of the Sega features/hardware/moving mechanical toys, are some of the best and most clever designs for DMD machines made through-out the 1990's.

Black Knight 2000 - they made alot, but hard to find (rarely sold from collections)
Bugs Bunny Birthday Bash - not many survive - (white cabinets - yellowed on site due to nicotine -not many around at all)

Some machines like Batman Forever - only 2500 made. Again, not too many made.

1978 Williams Phoenix - alot/many made, but how many survive in Australia ?

To a certain degree, half of the 1990's DMD games were by overall standards, low production numbers. So any game in great condition is worthy of calling at least "hard to find" tending in some cases on rare. Every machine saved is a good save.