世界は心に満ちている is a free iPhone game developed by Yuki Wada. It is set in a colorless world with a floating ancient castle amidst a sea of clouds. The game follows the story of a lonely girl who has lost her emotions.

In this solitary world, the girl lives a monotonous daily routine devoid of any feelings. However, everything changes when you, the player, come into her life. You have the ability to perceive the "hearts" that reside within colors, and through the camera feature in the app, you can show the girl the photos you take and witness her emotional growth.

The game consists of three main elements. First, you can capture photos using the in-app camera to discover the various colors that exist in our world. Second, each colorful photo you share with the girl contributes to her emotional development, gradually unlocking conversations and revealing different expressions. Lastly, the girl's past memories and encounters with other people are stored in the castle's "library," allowing you to uncover the mysteries behind her unique abilities and solitary existence.

Immerse yourself in the enchanting world of 世界は心に満ちている and explore the depths of the girl's heart through the power of colors.