Shrieks & Creaks (1988)

"Shrieks & Creaks" is a cassette-driven game featuring a Talking Tombstone. Players move from room to room and use both the room keys and their own character key to try to advance. A tombstone-shaped speaker attaches to a standard cassette player. The speaker will only allow sounds through if the right combination of room and character key are put into it. If sounds come from the speaker, the corresponding room is blocked to that player.