The Abandoned Playground is a stage in The King of Stories. It is not from any particular universe in the game, but possibly from the Mother universe, due to its resemblance to the Zoo from Brawl. Professor Layton, Yoshi and Matthew are playable here.
The Abandoned Playground seems to be a relinquished park, as its name states, with broken toys and park items. It is covered in plants, hence being abandoned. The abandoned playground is the exterior part of the main, metal tower, which Professor Layton, Matthew and Yoshi must pass through to get to the metal tower. It also features abandoned kindergardens and buildings, with scattered desks and broken hallways. The entire playground is surrounded by a forest and is themed coloured purple.