The Heart that Matters is inspired by the story Frankenstein. In the game the player controls the child of a mad scientist. The scientist has been experimenting on the child’s pets and they are in poor shape. They have been buried in the garden even though they are still alive.
The child must try to save his dying pets. One by one, he must locate them by listening for their heartbeat in an environment filled with distracting sounds. The player must remove other sound sources, in order to locate the heart of the target pet. Once the child finds a pet, he takes it to his father’s laboratory to revive it in a lightning chamber.
Each pet must be located and taken the lightning chamber to be healed before it dies. It is important to not waste time, since the pet’s heartbeat grows weaker and weaker (indicated mainly by a slowing of the heartbeat, but also a visual health-bar). If the pet dies before the player can heal it, the level resets so they can try again.
Each level has a single target pet; early levels have small pets like a mouse or a hamster while later levels could have a cat, dog or maybe even a miniature pony. The game has a limited area, and the player views the world with a birds-eye perspective. There are basically 2 locations: the scientist’s laboratory and the garden. Audio plays a very large role in this game.