Hollow Zero is a roguelike game mode that challenges you to complete zones in Zenless Zone Zero (ZZZ). See how to unlock Hollow Zero, all its six zones, a gameplay guide, including information on Resonia and Combat Configuration, and the rewards here!

Hollow Zero Latest Updates

Lost Void in Version 1.4

A new gamemode in Hollow Zero is now available for Proxies to participate in Version 1.4. In Lost Void. Proxies will need to use gears, collect resonium, and carefully plot their routes in this new game mode!

Hollow Zero Lost Void Guide

Blitz Mode for Withering Garden in Version 1.2

Blitz Mode was released in the Withering Garden stage in Hollow Zero in Version 1.2. This new challenge mode lets Proxies skip the exploration and immediately head into the combat against the elite enemies!

Since the exploration part will be skipped, Proxies will receive a Resonium Surprise Box after each fight instead. The surprise box contains multiple Resonia that can further help Proxies complete the Hollow stage.

1.2 Livestream Summary Guide

How to Unlock Hollow Zero

Progress The Art of War Lite Edition in Chapter 1 - Intermission

Hollow Zero unlocks during the Art of War Lite Edition commission in Chapter 1 - Intermission. This intermission will come after completing Cat's Lost and Found, which is the part where you will unlock the time system and side commissions.

Chapter 1 - Intermission Quest Guide

Accessible via Scott Outpost

Hollow Zero is accessible by going to the Scott Outpost Interior. It's inside the big tent and will be located on the left of the entrance.

What is Hollow Zero?

Roguelike Challenges

Hollow Zero is a roguelike challenge mode where you have to clear zones as fast as possible without gaining too much corruption. Optimize your characters and team comps to zoom through challenges!

Best Team Comps

Hollow Zero Zones

All 6 Hollow Zero Zones

All Hollow Zero Zones
Qualification Assessment	Old Capital Metro	Construction Ruins
Abandoned Skyscraper	Withering Garden	Inferno Reap

Qualification Assessment

Qualification Assessment Best Characters
Attack	Soldier 11 Ellen Zhu Yuan
Defense	Ben
Stun	Lycaon Koleda Lighter
Support	Nicole Soukaku Lucy
Featured Enemies

Qualification Assessment is the first zone you can unlock in Hollow Zero. This zone consists of two stages: the Edge and Frontline stages.

Qualification Assessment Guide

Old Capital Metro

Old Capital Best Characters
Attack	Ellen Zhu Yuan
Stun	Lycaon
Support	Nicole Soukaku
Featured Enemies

Old Capital Metro is the second accessible zone in Hollow Zero. It consists of 5 stages: the Edge, Frontline, Interior, Heartland, and Core stages.

Old Capital Metro Guide

Construction Ruins

Construction Ruins Best Characters
Attack	Anton Zhu Yuan Harumasa
Stun	Anby Qingyi
Support	Nicole Rina
Anomaly	Nicole Rina
Featured Enemies

Construction Ruins is the third accessible zone in Hollow Zero. It consists of 4 stages: the Frontline, Interior, Heartland, and Core stages.

Construction Ruins Guide

Abandoned Skyscraper

Abandoned Skyscraper Best Characters
Attack	Anton Ellen Zhu Yuan Harumasa
Stun	Anby Lycaon Qingyi
Support	Nicole Soukaku Rina
Anomaly	Nicole Soukaku Rina
Featured Enemies

Abandoned Skyscraper is the fourth accessible zone in Hollow Zero. It consists of 3 stages: the Interior, Heartland, and Core stages.

Abandoned Skyscraper Guide

Withering Garden

Withering Garden Best Characters
Attack	Anton Ellen Zhu Yuan Harumasa
Stun	Anby Lycaon Qingyi
Support	Nicole Soukaku Rina
Anomaly	Nicole Soukaku Rina
Featured Enemies

Withering Garden is the fifth accessible zone in Hollow Zero. It only consist of one stage, but you can add modifiers to increase the difficulty and get more rewards.
Withering Garden Guide

Inferno Reap

Inferno Reap Recommended Resonia
Duel Resonia	Ceramic Vase Tonfa
Critical Resonia	Doombringer High-Explosive grenade Laser Scope
Artifice Resonia	Hypnotic Pocket Watch Ornate Cane
Shield Resonia	Battery-Charged Baton Riot Helmet Tactical Rucksack
Featured Enemies

Inferno Reap is the sixth zone of Hollow Zero and involves fighting an undefeatable version of Nineveh. Proxies will be rewarded by the total DMG thay can deal to Nineveh in either a single fight or throughout all fights against her.

Be sure to bring your best characters with you and pair them up with the best Resonia Kit, which you can build by acquiring Resonia in the Withering Garden and saving them after your run.

Inferno Reap Guide and How to Beat

Hollow Zero Rewards

General Rewards for Each Stage

General Rewards	Limit Per Week
Investigation Point	7000 Investigation Points (1st-time clear reward not included)
Bangboo System Widget	Around 140-190 Bangboo System Widget
Bangboo Algorithm Module	Around 140-160 Bangboo Algorithm Module
Withered Crystal: Ink-Yellow	7500 Withered Crystals (Shared across all three Withered Crystal Types)
Withered Crystal: Iron Red
Withered Crystal: Heaven's Azure
Z-Merits	900 Z-Merits
Denny	Around 42,000 Denny

You can get these rewards above as a Regular Reward for completing a stage in a zone in Hollow Zero.

Note that there's a hidden weekly limit when getting the regular rewards in Hollow Zero. It means you can only get a limited amount of resources if you plan on using Hollow Zero as a way to get materials and other items.

Collect Resonia, Corruption, Special Events and Lost Items

One Task Completed	Polychrome x20 Bangboo Algorithm Module x2 Denny x1000
White Star Allowance	Polychrome x80 Note: This reward will progress after collecting the rewards for each task completed.

You can get additional rewards, mostly Polychromes, when you unlock a certain number of new Resonia, Corruption, Special Areas, and Lost Items. You can get the rewards by talking to Ray near Hollow Zero.

All Investigation License Rewards

Investigation License rewards range from Bangboo Ascension Materials, Inter-Knot Credits, Polychromes, Bangboo Cores, and Dennies.

Lv.	Investigation License Rewards
1	Inter-Knot Credit x600 Ether Electrolyte x18
2	Boopon x1
3	Polychrome x40 Denny x50000
4	Boopon x1
5	Polychrome x40 Bangboo System Widget x5
6	Inter-Knot Credit x600 Energy Transfer Fluid x6
7	Boopon x1
8	Polychrome x40 Denny x50000
9	Boopon x1
10	Polychrome x40 Booressure x1
11	Inter-Knot Credit x600 Energy Transfer Fluid x6
12	Boopon x1
13	Polychrome x40 Denny x50000
14	Boopon x1
15	Polychrome x40 Bangboo System Widget x5
16	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
17	Boopon x1
18	Polychrome x40 Denny x50000
19	Boopon x1
20	Polychrome x40 Booressure x1
21	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
22	Boopon x1
23	Polychrome x40 Denny x50000
24	Boopon x1
25	Polychrome x40 Winding Roses Namecard x1
26	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
27	Boopon x1
28	Polychrome x40 Denny x50000
29	Boopon x1
30	Polychrome x40 Booressure x1
31	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
32	Boopon x1
33	Polychrome x40 Denny x50000
34	Boopon x1
35	Polychrome x40 Fragrant Infusion x1
36	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
37	Boopon x1
38	Polychrome x40 Denny x50000
39	Boopon x1
40	Polychrome x40 Booressure x1
41	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
42	Boopon x1
43	Polychrome x40 Denny x50000
44	Boopon x1
45	Polychrome x40 Tuning Calibrator x1
46	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
47	Boopon x1
48	Polychrome x40 Denny x50000
49	Boopon x1
50	Polychrome x40 Booressure x1
51	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
52	Boopon x1
53	Polychrome x40 Denny x50000
54	Boopon x1
55	Polychrome x40 Hi-Fi Master Copy x6
56	Inter-Knot Credit x600 Concentrated Cooling Fluid x2
57	Boopon x1
58	Polychrome x40 Denny x50000
59	Boopon x1
60	Polychrome x40 Hi-Fi Master Copy x6

Bounty Commission Rewards

Completing Bounty Commissions will reward you Z-Merits that you can use in Casper's Shop to purchase valuable items, such as Master Tapes and Boopons.

Bounty Commissions also have other rewards such as Inter-Knot Credits, Polychromes, and Dennies!

How to Use Z-Merits

Hollow Zero Resonia

Collect Resonia to Get Combat and Exploration Buffs

In Hollow Zero, navigating the floors will earn you various types of Resonia which buff your Agents and help them defeat your opponents, including the boss at the end of the exploration.

Also, obtaining Resonia of the same type will allow them to join together and become one which makes them more powerful.

Building Resonia Kita

Resonia Kits are a set of Resonia you have collected in the Withering Garden, may it be through Exploration Mode or Blitz Mode.

After each run in the Withering Garden, the game will ask you if you would like to retain the current collected Resonia as a Resonia Kit for Inferno Reap. Should you wish to do so, simply hit confirm.

Collect Inferno Reap Resonia Kit in Exploration Mode

When it comes to collecting Resonia for Inferno Reap, it's recommended that Proxies do so in Exploration Mode as opposed to Blitz Mode. The reason for this is that at most, you can only get 16-18 Resonia in the latter.

However, when exploring the Withering Garden manually, you will have access to multiple sources of Resonia, from Bangboo Merchants to event tiles. You may even keep Artifice Resonia in your kits, which can come in quite handy!

List of All Resonia

Character Trust Grants Affinity Resonia

Character Trust can grant Proxies Affinity Resonia.

Once a character's Trust reaches a certain level, these Resonia are aligned with their gameplay and will become available in Hollow Zero. Be sure to invite your Agents for hangouts regularly by sending them DMs!

How to Increase Agent Trust Level

Get More Buffs From Support Bangboos

Through board events, you can also get Support Bangboos. These Bangboos will give boosts like bonus elemental damage, Crit Damage, Crit Rate, or energy regen buff.

These Bangboos are your normal Combat Bangboos, except they cannot join in Chain Attacks or use their Chain Attack skills.

Hollow Zero Combat Configuration

Unlock Nodes in Combat Configuration

Withered Crystals are rewards you earn from exploring Hollow Zero. You use this to unlock nodes in your Combat Configuration, which will allow you to gain various mods and benefits during your missions.

Completely unlocking smaller nodes around larger nodes will unlock them, which provides massive buffs in Hollow Zero.

Three Types of Withered Crystals

There are three types of Withered Crystals: Heaven's Azure. Ink-Yellow, and Iron Red. Each node in Combat Configuration will require different types of crystals.

Related Guides
Withered Crystal - Heaven's Azure	Withered Crystal - Ink-Yellow	Withered Crystal - Iron Red

Pressure and Corruption System

Pressure and Corruption Explained

In Hollow Zero, every step on the untouched tiles on the board generates 10 Pressure by default. When Pressure reaches 100, a random Corruption will appear and Pressure will be cleared. Corruption can have negative effects on both combat and exploration.

You may remove Corruption through events on the board or by using the Observation Station scattered in each floor of the stage.

List of All Corruption

Max Corruption Can Buff the Boss

Max Corruption (purple Corruption) is a specific buff for the final boss of the stage. You can get the Max Corruption after obtaining and keeping five total Corruptions in your current run.

You should remove this before reaching the final exit, as you might get defeated by the boss and not get all the rewards of the stage!

Hollow Zero Gameplay Guide

Deploy Your Best DPS

You start with only one Agent in Hollow Zero, so make sure to deploy your best DPS Agent since they will be exploring alone at first. You then have to find the other characters you have set through events on the board.

Also, you start with only three Agent slots but you will be able to unlock more eventually.

Tier List and Best Characters

Explore Various Zones

Hollow Zero currently has five zones, with each zone having multiple stages: Edge, Frontline, Interior, Heartland, and Core. Some zones have five stages while others have three or four stages. It varies depending on the zone.

The Difficulty of each stage can range from Difficulty I to Difficulty V. Exploring zones give you Investigation Points and materials you can use to upgrade your Investigation License and Combat Configuration.

The higher the difficulty, the more Investigation Points and materials you get.

Complete Qualification Assessment

To unlock other Zones in Hollow Zero, you must first complete the Qualification Assessment Zone. This stage is initially unlocked and will be the first Zone you tackle.

Qualification Assessment Guide

Earn Investigation Points

Exploring Hollow Zero gives you Investigation Points which you can use to raise the level of your Investigation License. There is a limit to how many points you can earn per week. This limit increases as you level up your License.

Level Up Investigation License to Get Rewards

Leveling up your Investigation License will net you various rewards and also increase the weekly limit of Investigation Points you can earn through exploration.

The maximum level for the Investigation License is until Level 60.

All Hollow Zero Rewards ▲

Complete Bounty Commissions

Aside from the Investigation License and Combat Configuration, Hollow Zero also has Bounty Commissions. These are time-limited commissions that give you rewards upon completion and refresh weekly.

The tasks for each Bounty Commission are random and the rewards also change every reset.

Zenless Zone Zero Related Guides

Zenless Zone Zero Wiki Front

Guides by Category

Zenless Zone Zero Categories
News and Game Info	Redeem Codes
Characters	Tier Lists
W-Engine	Drive Discs
Signal Search	Bangboo
Events	Travel
Shops	VR Device
Enemies	Bosses
Hollow Zero	Shiyu Defense
Rally Commissions	Arcade (Godfinger)
Items	Commissions
Mewmew Medals	Trust Events

Zenless Zone Zero Tips and Tricks

Gameplay Guides
How to Level Up Characters	How to Build and Enhance Characters
How to Ascend (Promote) Characters	How to Recover Battery Charge
How to Raise Your Inter-Knot Level	All Inter-Knot Level Rewards
Daily and Weekly Server Reset Times	How to Change the Time
List of All Achievements	Trophy Guide
Missing Mini Cargo Truck Locations and Rewards	Reroll Guide
Microtransactions and Best In-App Purchases	How to Increase Agent Trust Level
Fast Travel Guide: How to Teleport	How to Modify and Upgrade W-Engines
How to Gain Energy	How to Heal Characters
Compendium Guide	List of Primer Trials and All Rewards
Best Standard Banner Character Guide	How to Get Promoters for Random Play
Exploration Elements	Workbench Guide
How to Level Up Drive Discs	How to Upgrade Core Skills
How to Pet Cats	Public Telephone Guide
How to Change Your Name	All Stats Explained
How to Raise Your Proxy Rank	Immersive Storytelling Mode Guide
How to Get and Change Namecards	Skill Enhancement Guide
How to Take Pictures	How to Level Up and Ascend Bangboos
Best Battery Priority Guide	Best A-Rank W-Engine to Get from the Bundle
Combat Guides
Basic Combat Guide	How to Daze and Stun
Chain Attack Guide	Ultimate and Decibel Rating
Perfect Dodge and Counter	Perfect Assists and Parries
Attribute Anomaly	What are Additional Skills?
How to Destroy Enemy Parts	How to Do EX Special Attacks
How Do Shields Work?	-
Items and Collectibles
How to Farm Polychromes	How to Get and Use Residual Signal
How to Get and Use Fading Signal	How to Get and Use Encrypted Master Tape
Best Ways to Farm Denny (Money)	How to Get and Use HIA Commemorative Coin
How to Get and Use W-Engine Chip	How to Get and Use Ether Battery
How to Get and Use Boopon	How to Get and Use Bangbuck
How to Get and Use Monochrome	Exclusive Skins for W-Engines
How to Get Dynamic Wallpapers	How to Collect Observation Data
How to Use Photowall	How to Get Cat Food Cans
HIA Coins Sixth Street Locations	HIA Coins Brant Street Locations
HIA Coins Lumina Square Locations	HIA Coins Ballet Twins Road Locations
Game Modes and Dailies
Dailies - Errands Guide	Hollow Deep Dive Explained
Officer Mewmew Medal Locations and Challenges	Notorious Hunt Guide
Routine Cleanup Guide	Casual vs Challenge Mode
Frequently Asked Questions
Should You Choose Belle or Wise?	Does Zenless Zone Zero Have Crossplay?
Are There Multiplayer Features?	How to Transfer Data
How to Exit the Game	How to Play With Controller on PC/Mobile
Birthday Guide: What Do You Get On Your Birthday	Which Server Should I Use?
New Eridu City Fund Battle Pass Guide	Can You Reset an Account?