Revision 4

Overview

Luca is the essence of a planet, its life energy. In Petit Planet, Luca is the primary resource and progression metric. Players collect Luca through daily activities and pour it into the Luca Arbour (also called the Luca Tree) at the center of the player's planet. As Luca accumulates, the Arbour grows and the planet itself transforms, unlocking new areas and customization options.

Jars of Luca

Luca is collected in the form of "Jars of Luca." Players fill these jars through nearly every activity in the game: farming crops, fishing, Mining and Crafting, and completing tasks for Neighbors. Once collected, Jars of Luca are poured into the Luca Arbour to advance the planet's development. Building strong relationships with Neighbors also produces Luca, as Neighbors gift Luca when the player completes quests for them.

The Luca Arbour

Each player's planet has a Luca Arbour. When players pour Jars of Luca into the Arbour, it absorbs the energy and channels it into the planet. This triggers visible changes: new terrain, new areas, and new biomes appear. Unlike games that show construction barriers during expansion, Petit Planet reveals surprise areas when Luca milestones are reached, keeping the unlocks unexpected and rewarding.

Luca Level Unlocks

Additional Luca levels unlock further regions and features. The exact unlock schedule beyond these early levels has not been fully documented.

Luca Fruits

As the Luca Arbour grows, it grants "Luca Fruit slots." Luca Fruits are special items that customize the planet's appearance. For example, a "Sunset Cliffs" Luca Fruit alters the coastline terrain, while other fruits can change grass to purple or adjust the color of the sky. Neighbors also gift Luca Fruits to the player when their bond level is high enough, providing additional options for Planet Customization.

Neighbor Luca

Neighbors contribute Luca in a unique way. When the player completes quests or reaches bond milestones with a Neighbor, that Neighbor gifts Luca directly. This means investing time in social relationships with Neighbors is one of the most effective ways to fill Jars of Luca and advance planet development.

Luca and Progression

Luca functions as the game's core progression system. Rather than leveling up a character, players level up their planet. Total Luca accumulated determines the planet's development stage, which in turn gates access to new features, areas, and Neighbor interactions.