Spy vs Spy 2: Island Caper was one of several games planned for a stateside release. After the success of the original, Kemco/Seika decided that a sequel was needed. Features included a two-player mode, vs computer mode, and several new tricks devised for the island adventure.

If you want to view the magazine scan, click here for page one and here for page two. Article taken from "Game Player's Encyclopedia of Nintendo Games Volume One 1990"

Pictures thanks to Ickdoggit.