The Skill Tree (スキルツリー, Skill Tree) is a menu item in Adventure Mode: World of Light. In it, the player can spend Skill Spheres in order to learn Adventure Skills. These are effectively power-ups akin to the skills granted by Support Spirits (and can sometimes stack with their equivalent Spirit skills), and are active in World of Light only. The icons resemble the stat boost icons found in Super Smash Bros. 4's Smash Tour and Smash Run. Obtaining a power-up also makes power-ups further down the tree available. The player can spend SP to forget a power-up and gain back all of the Skill Spheres spent on it. The skills can be carried over from a completed save file to a new one via the New Game+ feature.
Obtaining all of the skills on the tree unlocks the Drill challenge, which rewards the player with 3 Classic Tickets. Additionally, Skill Spheres will no longer appear in shops or be awarded after battles, and treasure chests containing Skill Spheres will instead contain Spirit Points.
The total amount of Skill Spheres required to obtain all of the skills on the tree is 3,000.
List of skills
Some skills are different from support skills of the same name, resulting in different multipliers. For example "Special-Move Power ↑" is separate from its support skill counterpart, leading to a multiplier of ×1.1025 (1.05×1.05) instead of ×1.13. "Strong Throw", however, is identical and results in the normal ×1.18 multiplier.
Below is a list of all skills on the Skill Tree.