ChildStory is an adventure-RPG developed by Oliver Orangers. Players control Sonya, a resourceful adventurer navigating a cold world using improvised tools. The game involves engaging with characters in Albom city, solving riddles, and exploring a fantasy world with a winter atmosphere and a New Star Festival event. Sonya must confront ancient spirits and monsters in bullet hell boss battles.

The narrative centers on Sonya's role in the lunar cycle alongside the shepherdess Nora. Sonya visits the polar town of Albom monthly to consume the moon, continuing its cycle. Players assist Sonya in creating this cycle and help her confront her doubts. The game also features riddle-solving and interaction with various characters and creatures.