You control a character with the keyboard and a tiny moon with your mouse (it will also be playable with a controller). Explore a small open world and uncover secrets and mechanics hiding right under your nose. Use the moon to manipulate creatures and the environment and explore a tiny open world. Curiosity, knowledge, and discovery of game mechanics are the primary ways to progress.
Looks cool, but do you control just the moon or both the character and the moon?
From the announcement in /r/godot on reddit.