The Secret Island of Dr. Quandary
The Secret Island of Dr. Quandary is an educational computer puzzle game developed by MECC, which pits you against a variety of mathematical and logical puzzles. It was released in 1993 for the DOS and Mac OS platforms.
Story
You start as a human playing in a shooting gallery in Dr. Quandary's carnival, and you are given a live-action figure when you beat the shooting game. However, it is a ruse for Dr. Quandary to put you in the doll and transport you to his secret island, and you must gather and brew the Fixer Elixir in order to escape from his island.
Puzzles
There are a variety of puzzles in the game in which you must solve, most requiring some mathematical or logic skills, with some memory challenges thrown in as well. There are also varieties of traditional puzzles, such as the Tower of Hanoi, found in the game. Beating each puzzle will net you an item that can be used as an ingredient for the Fixer Elixir, which can be a puzzle in itself for the harder difficulty levels.