Overview
TheLuca Arbour(also called the Luca Tree) is the central tree at the heart of every player's planet inPetit Planet. It is the focal point of planet progression: players collectLucathrough daily activities and pour it into the Arbour, which absorbs the energy and reshapes the world. As the Arbour grows, new biomes, areas, and customization options unlock across the planet.
How the Arbour Grows
Players carry Jars of Luca back to the Arbour and offer them to advance its level. Each level threshold unlocks a new area or feature on the planet. Unlike construction-style city-builders, the Arbour does not show scaffolding or work crews. Instead, when a milestone is reached the planet visibly transforms: a beach appears, a mountain region opens, or a new biome unfurls.
Level Unlocks
Arbour Level | Unlock |
|---|---|
1 | Beach area becomes accessible along the edge of the starting plot. |
4 | Mountain region opens forMining and Craftingand the Pogo Stick traversal route. |
Higher levels | Continue to unlock additional biomes, expanded crop fields, and new Neighbor housing slots. Exact thresholds vary by build. |
Luca Fruits
Once the Arbour reaches certain growth points, it producesLuca Fruitsthat hang on its branches. Luca Fruits are special customization items that adjust large parts of the planet at once: a Sunset Cliffs fruit reshapes the coastline, a different fruit might tint the sky lavender or turn the grass into pale moss. Players also receive Luca Fruits as gifts from Neighbors at high friendship bonds, which expandsPlanet Customizationoptions beyond what the Arbour grows on its own.
Two Kinds of Luca
The Arbour accepts two distinct kinds of Luca:
Type | Source | Purpose |
|---|---|---|
Regular Luca | Daily activities likeFarming,Fishing, mining, and quests. | Waters the Arbour and counts toward its base growth. |
Neighbor Luca | Gifted byNeighborswhen the player completes friendship quests or reaches bond milestones. | Enables larger planet upgrades that cannot be reached with regular Luca alone. |
Surprise Unlocks
A signature design choice is that area unlocks are kept hidden until the milestone fires. Players will not see the next biome staked out behind a fence or shown as a locked overlay. Instead the planet simply reveals it as the Arbour absorbs enough Luca, which keeps the rhythm of long-term play exploratory rather than checklist-driven.
Strategy
Friendship withNeighborsis the most efficient Luca source because each completed quest gifts Neighbor Luca directly. Pairing daily farming and fishing routines with at least one or two Neighbor quests keeps the Arbour growing on both tracks.
Keep rare crops and high-quality fish for the Arbour rather than selling them toGlenn. The Arbour rewards higher-quality offerings with more growth per item.