Multistreaming with Castle of Dr. Brain is an educational video game released in 1991 by Sierra On-Line. It is a puzzle adventure game. The object of the game is to successfully navigate the puzzles Dr. Brain has set up in order to become the mad scientist's assistant, a position Dr. Brain had advertised in the local classified section. To enter the castle, the player must play a game of memory at the front gate. Inside, the player must solve puzzles within the hallways and rooms of the castle. There are also three mazes in which the player must guide an elevator between and among different floors.
