[1] The U.S. licensed version from American Video Entertainment, was released in 1991 as Mermaids of Atlantis, with all adult elements removed or obscured.
In the same year, a localized version leaving intact those contents was released by Hacker International in Japan as Soap Panic, and still in the U.S. by Panesian.
The goal is to steer clusters of rising bubbles and place them so that they connect to others with a matching color along the top screen part.
[1] Allgame gave a retrospective score of 2.5 out of 5 stars, saying "Bubble Bath Babes is most notable for being one of three NES games to feature nudity, but its bubble-matching gameplay is good enough to keep it from being just a novelty.
"[2] The game later became a rare collectible item in North America due to its limited release, with complete copies selling for thousands of dollars.