The Goonies II (グーニーズ2 フラッテリー最後の挑戦, Gūnīzu Tsū: Furatterī Saigo no Chōsen, The Goonies II: The Fratellis' Last Stand) is an adventure game developed and published by Konami for the Nintendo Entertainment System. It was released on March 18, 1987 (1987-03-18) in Japan, November 1987 in North America, and on December 19, 1988 (1988-12-19) in Europe. It is a sequel to the first Famicom Goonies game, which was only available in North America on PlayChoice-10 arcade units. This led some people to believe that it was supposed to be a sequel to the movie The Goonies which was never produced.
The game's story centers on Mikey. His friends, the Goonies, have been kidnapped by the Fratellis, an Italian family of small-time crooks and counterfeiters. Mikey must rescue all six of his friends and free a captured mermaid named Annie who didn't appear in the film.
Source: Wikipedia, "Goonies II," available under the CC-BY-SA License.