Direct answer: World Level 5 content unlocks after you reach Book of Stars Lv. 50 and clear the Book of Stars Dungeon. It adds Corruption Frenzy Field Bosses, scheduled Massive Corruption Frenzy matchmaking and a permanent Star Map progression system.
How does Corruption Frenzy work?
- It only occurs at World Level 5. A personal gauge fills every 8 hours, including while offline, and can hold up to three different Corrupted Field Boss types.
- Each Reward Cube costs 30 Cube Keys. Party members can claim a reward in another player's world only when they have an active Corruption Frenzy of their own.
- Three Corruption Colonies appear around a personal Corrupted Field Boss. Purifying their Abyss Flowers can remove one enhancement effect each; Force Purify removes the event without rewards.
- A Corrupted Field Boss remains until defeated, and gathering, mining and quests cannot progress in its affected region.
When is Massive Corruption Frenzy?
The official UTC schedule is Friday at 10:00 and 18:00; Saturday at 02:00, 10:00 and 18:00; Sunday at 02:00, 10:00 and 18:00; and Monday at 02:00. That is nine weekly occurrences, each lasting three hours.
It is a 10–15-player matchmaking encounter. You can queue alone or with a party of up to five, revive without a stated limit, and open Reward Cubes without extra currency after dealing damage. Rewards are claimable up to three times per day, not once per occurrence.
How does Star Map progression work?
- Star Map has 62 tiers with permanent stats. It has Attack, Defense and HP Star Paths, each made of 15 Star Seeds.
- Fill all three paths before using Hero Points to unlock the next tier. Hero Points come from obtaining a hero for the first time; duplicates and Potential do not add more.
- Eight shared Star Clusters unlock in order using Lodestars, which are not consumed. Each cluster has five Apastrons that can add up to three stats, including elemental stats, and can be upgraded to Tier 3 with Mastery EXP and Gold.
What does the official FAQ clarify?
You can claim all three daily Massive Frenzy rewards during one three-hour occurrence if you participate enough. Up to three Activation Tickets can be used at once when the personal boss limit allows it; tickets do not work at World Levels 1–4. The new side quest The Corruption Strikes Back is optional and is not required to enter either Frenzy mode.
What is not confirmed here?
This guide does not publish banner rates, pity changes, character rankings or a universal best team. The Star Map rules describe permanent progression, but they are not evidence for a specific damage build or pull recommendation.
Official source: World Level 5 Content Guide & FAQ.
November 5 maintenance status · Version 2.3 events schedule · Progression and upgrades