ZZZ Hollow Zero Guide — How It Works, Node Order & Best Strategy | Zenless Zone Zero

Hollow Zero is ZZZ's dedicated exploration mode: instead of a normal 3D hub you walk through, the map is presented like a frame on a TV screen, matching the game's whole "TV universe" theme. It unlocks progressively as you advance the main story in New Eridu, and HoYoverse typically rotates the season's theme and map rules with each version (check the patch notes for the current season's exact rules before diving in, since specific numbers can shift between versions).

Before starting a run you pick one Bangboo companion — see the Bangboo guide if you're new to that system — then bring the 3-Agent combat team you'll use for the whole run.

The Hollow Zero map is a grid of connected nodes; you move from your current node to an adjacent one until you reach the boss node at the end. Every move costs one of your run's limited moves, so the route needs planning rather than trying to clear every single node.

• Combat nodes: fight regular enemies or an elite, then collect rewards and a possible Resonium drop.
• Event nodes: a short dialogue/choice segment, sometimes granting items or altering the map's rules.
• Chest & shop nodes: spend in-run currency or Boopon for items.
• Resonium nodes: pick one of several offered Resonium to buff the rest of the run.
• Boss node: the map's final big fight — clearing it is what completes the run.

Since moves are limited, prioritize Resonium/chest nodes that sit close to the direct path to the boss rather than detouring to grab every node.

Resonium are temporary buffs that only last for one Hollow Zero run and disappear once you leave the map. They're tagged by family/series — collecting enough Resonium from the same family usually unlocks a stronger combined effect than picking Resonium scattered across different families. Some Resonium families that have appeared in the game (names can rotate by season, so check the current map before picking):

• Adversity
• Anomaly - Stun
• Dexterity
• Ultimate
• Critical
• Duel

When the map offers a 1-of-3 pick, prioritize the Resonium that matches a family you already have over a strong-looking Resonium from a different family — the set effect is usually bigger than the sum of picking them individually.

Since every run has a limited number of moves and you clear several combat nodes back to back, the ideal team clears fast and doesn't need many turns to ramp up damage, rather than a slow-burn team — check the team compositions list to match one to the build you actually own. Bring at least one Agent who blocks/dodges reliably so you don't bleed HP across consecutive nodes, plus one support who applies Anomaly or breaks Daze quickly against elites and the boss.

Your Bangboo companion doesn't join the combo directly but can help trigger node mechanics or speed up clears — if you're new, read the basic Bangboo guide before picking one that fits your team's playstyle.

Boss nodes usually feature an enemy with a large health bar and season-specific mechanics that rotate whenever HoYoverse changes Hollow Zero's theme. A few general rules apply across most seasons:

• Block/dodge on rhythm: keep a reliable defensive Agent as your anchor so you don't eat unnecessary damage from the boss's wide-hitting attacks.
• Break Daze before committing to burst damage: ZZZ bosses usually track a separate Daze bar alongside HP — see the Stun/Daze mechanics guide before a tough fight.
• Lean into the Resonium set you've built: if your picks lean toward one family (e.g. Anomaly or Support), keep playing that way instead of switching styles mid-fight.
• Stock up on recovery items: buy from a shop node before the boss node if the map allows it, since there's usually no chance to restock after entering the boss fight for that run.

Clearing a Hollow Zero run gives you Dennies, upgrade materials, and Boopon — the mode's dedicated currency for its own shop. Exploration progress/weekly points for the mode are typically tracked weekly and reset at the game's regular weekly maintenance, so if you can't play daily, batch your runs into 1-2 sessions before the reset instead of losing the weekly cap. Since exact reward numbers can shift by season/version, double-check the current values in-game or in the latest patch notes before planning your farming schedule.