Day of the Tentacle, also known as Maniac Mansion II: Day of the Tentacle, is a 1993 graphic adventure game developed and published by LucasArts.
Players direct the controllable characters around the game world by clicking with the computer mouse.
To interact with the game world, players choose from a set of nine commands arrayed on the screen (such as “pick up”, “use”, or “talk to”) and then on an object in the world.