Heart World is one of the main worlds accessible from the Nexus. It is also one of the the smallest of the main areas as well.
Features
The world mainly has red footprints that make a noise when stepped on and red statues. The background is plain black and the backing track is simply the sound of a heart beating.
When you use the Lantern effect in this world, it changes the background design, and if you're lucky, it will stop the pink skull creature that moves very quickly away from you, so you normally can't see it. If you interact with it, it will take you to a tile-filled sub-area. If you interact with the heart hidden there, it will take you to a large beating heart that you cannot escape from. Using the Chainsaw on it will stop it from beating.
By stepping on the shoes at the end of one of the footprint paths, it will take you to the Deciding Street.
The Twintails effect used to be found in plain sight in this area, which you could get from the Twintails Monster, but now it is found in the Bazaar.