Spinnaker was a software company specialized in educational games for the Apple II. There were successful in the beginning of the 80s with the game "In Search of the Most Amazing Thing", a graphics adventure for elementary kids.
They converted four titles to Colecovision, all educational games. They were not popular at that time but sealed games can still be easily found. There are two types of boxes for these games, the first edition came in clamshell box and the second edition came in cardboard box.