The main quest is to find all musical instruments and face the bosses to learn partitions.
Lost Note is a game in which the player plays a robot in a vicking village. The robot’s goal is to find musical instruments to understand the rhythm of a music. Vicking village is a computer program to improve the robot. The simulation is protected by different bosses that the robot must beat in rhythm thanks to its colored laser beams.
The vicking universe is represented by asset modeling that represent wooden houses, forests in ice, and fishing activities. These three tools refer to the image of vickings in the common imagination of the players.
The robot universe is represented by futuriste materials, a lot of bloom and technological objects that contrast with the rusticity of vickings.
The common point of these two universes is the possibility of fighting with great force to the point of being able to destroy the walls. 

This is the first quest in which the player will engage, it makes him discover the world and the game. The quest begins in the surroundings of the vicking village. There are wood panels with mecanical tutorial for the laser beam. Player need to go on the colored square on the ground for shoot and destroy the obstacle. Once the player pass throught the three obstacles, he win his first buffer. A pipe emerges to the ground and seems to be the origine of the electronic things. The player can enter in the village and triggered a red square who cause an explosion, this reveal the hostel. The player can't go inside for the moment and needs to find an other buffer. For that he can explore the village and find a secret buffer near of the shipyard or he can go to the cottage and resolve an easy puzzle. Now he get two buffers and can enter to the hostel where in will find the first holographic boss.

To finish the tutorial the player must find a second buffer. He must therefore explore the village and the houses. If he goes to the beach of the cove he will find a secret stamp. The latter is next to an explosive slab. By activating it, the player explodes a boat and discovers a partition. This score is the music of the boss room, there is a note about the carpentry of the village. Continuing to use the unlocked path the player will find a chime. It is need to be placed next to the door of the carpentry and allows to open it. Inside he will discover that everything is automated. Holographic vickings transform wood into boards and logs. In the master’s office he will discover a photo of the carpentry team. The chef is also the boss that the player will have to face in the hostel.
The name of the quest : disco robot, refere to the dance of the boss inspired by disco dance moves. 

In this world you play a prehistoric bird named Quilli. He seeks to reach the golden apple. To achieve this he will have to cross a favela with different paths. In order to indicate to the player the main path a light trail (fireflies) represents the golden path. Moreover, the main path is distinct from the secondary paths because it is always in the light when the others are in the darkness.
Another way to guide the player is apples. They are not mandatory to the success of the level but allow to test his skills. For example, by reaching apples on the roofs of buildings. They serve to encourage the player to explore the corners of the favela and thus discover points of view and hiding places.

The feeling of progress keeps the player motivated and attentive. In Quilli it results in the lanterns dotted throughout the level. They mark the different stages to finish the quest. Before or after each challenge the player will encounter a lantern. They can be of three different types. First, the checkpoint lantern that allows you to save and appear after a defeat. Second, the lantern of life that gives one point back to Quilli. Third, the activation lantern that triggers a timed platform challenge. This challenge acts as a shortcut in order to progress faster in the level or as a moment of danger that can bring the player back if he fails. 

Quilli is in a favela, but what does this place tell us? The city is built on a cliff surrounded by the ocean. This means that there is a lot of erosion so the houses had to be consolidated over time, beams and piles were added, walls rebuilt... The city has also grown to accommodate all the new dead who arrive. For this, a vertical expansion was made, paths on the roofs were also built to be able to cross the different heights. The tombs present along the way are a reference to the fact that the inhabitants are souls. They are their passage between the world of the living and the world of the dead where is Quilli.