Two Children in a World Where Emotions Change Everything

When their parents mysteriously disappear, two children embark on a cooperative 3D adventure through the Sans-Dessus-Dessous, a universe where every world is shaped by a different emotion.

To move forward, they must work together, understand the rules created by these emotions, and learn how to reverse them.

Worlds Shaped by Emotions

Each world embodies a different emotion, with its own rules, challenges, and puzzles.

Explore peaceful forests, melancholic deserts, mysterious mines, snow-covered mountains, and worlds suspended in outer space. Environments and music evolve from one world to the next, constantly changing the way you play.

Reverse Gravity

Walk across ceilings, uncover hidden paths, and experience the world from a whole new perspective.

Reversing gravity transforms the way you move, changes the rules of each level and its music, and opens up new paths to explore.

Work Together to Move Forward

Play solo with an AI-controlled companion, share the adventure in local co-op, or play online using Steam Remote Play Together.

Solve puzzles, combine the children’s unique abilities, and gradually unlock new powers, including teleportation, flight, invisibility, and a magical shout.

A dynamic shared camera follows both characters and automatically splits when they move apart, giving each player freedom while keeping the two children connected.

Face the Machines of the Sans-Dessus-Dessous

Use the children’s complementary abilities to dodge incoming attacks and overcome the machines standing in your way.

Some worlds are guarded by unique bosses whose mechanics are inspired by the emotions they embody. Study their behaviour, cooperate, and discover how to exploit their weaknesses.

Features

• A cooperative 3D adventure blending platforming, exploration, puzzles, and combat

• Play solo with an AI-controlled companion, in local co-op, or through Steam Remote Play Together

• A dynamic shared camera

• Worlds and gameplay mechanics shaped by emotions

• Gravity-reversing gameplay

• Complementary powers to unlock

• Accessible combat and unique boss encounters

• A colourful, stylised 3D universe

• A dynamic soundtrack that evolves with the gameplay

• An adventure designed for players of all ages