Mystery Voyage (1986)

You find yourself lying on a raft floating in the middle of the sea with no land or anything in sight after you had to abandon ship with the rest of the crew into shark infested waters. Your aim in this three part text adventure is to get yourself back home as you face various challenges and quests, as well as face many monsters and creatures on your travels. Each location is described by text and you type in with the keyboard, commands to control your hero and interact with the locations. Each time a character speaks to you, you can hear it with digitized speech.