Voodoo Castle

Voodoo Castle is a text adventure game written by Scott Adams and his wife Alexis. Published by Adventure International in 1979, it is #4 in the Scott Adams "Adventure" series.
Gameplay.
Gameplay involves moving from location to location, picking up any objects found there, and using them somewhere else to unlock puzzles. Commands take the form of verb and noun, e.g. "Climb Tree". Movement from location to location is limited to North, South, East, West, Up, and Down.
The goal is to wake up Count Cristo, who is lying in a coffin at the starting location in the game. In order to do so, the player needs to obtain certain items, which requires overcoming certain obstacles, such as an exploding test tubes and a doorway that's too small to pass through normally.