Roberta Williams' Mixed-Up Mother Goose is a computer game first released by Sierra On-Line in 1987. It is, in essence, an edutainment title, directed specifically at young gamers, as well as an adventure game.
The storyline of the game is very simple, as is common in games for children. One night, while preparing for bed, a child (which is the player's avatar) is sent into the dreamlike world of Mother Goose, who desperately needs his or her help. All the nursery rhymes in the land have gotten mixed up, with none of the inhabitants possessing the items necessary for their rhyme to exist. And so, the child will find themselves helping Humpty Dumpty find a ladder to scramble onto a wall, bringing the little lamb back to Mary and seeking out a pail for Jack and Jill, among others.
Source: Wikipedia, Mixed-Up Mother Goose , available under the CC-BY-SA License.