I was a fan of Bikini Karate Babes, but I just got an e-mail from the site, with this address:
http://www.warriorsofelysia.com/
Gee, that looks like some serious... erm... "quality" right there.
Oh dear.
If this doesn't predate Anime Tennis Babes, I know who's getting the blame for this.
There's nothing particularly NSFW about the webpage (not that I've dug deep into it), but by cripes the game looks like exploitative tatty garbage.