Subcon is a world in Super Mario Bros. 2 that exists in Mario's dream. It was a complete remake of Nintendo's original game, Yume Kōjō: Doki Doki Panic (translated as "Dream Factory: Heart-Pounding Panic"). Subcon is linked to an interdimensional dream pocket dimension called "Subspace" in which Mario and crew can travel there via potion. Subspace is typically the place you'll encounter red coins and mushrooms, but being limited by a time, you got to be quick in Subspace in getting the item you want as mushrooms or red coins can be vacant at times, depending on the area.
As a vegetable-filled kingdom ruled by Wart, it features:
- Giant Vegetables
- 1-Up Mushrooms
- Mushroom Blocks
- POW Blocks
- Koopa shells
- Stop Watches
- Crystal Ball
The remake, Super Mario Advance, features two additional items. They are:
- Subcon's name originates from the word "subconscious", since it exists only in Mario's dream.
- This stage makes an appearance in Super Smash Bros. Melee as "Mushroom Kingdom II".