Mermaids of Atlantis: The Riddle of the Magic Bubble is an NES game released in the USA. The 'Unl' designation suggests it was an unlicensed release. Gameplay likely involves adventure, puzzle solving, and potentially elements of exploration underwater. Due to the title, the game probably features aquatic themes, mermaids, and possibly magical elements. Pinpointing the original developer and publisher requires further investigation into the history of unlicensed NES titles.

Mermaids of Atlantis - The Riddle of the Magic Bubble (USA) (Unl)

Menace Beach (USA) (Unl)