Infinite Abyss Quest Guide

Infinite Abyss is an Exploration Commission in Zenless Zone Zero 1.0 (ZZZ). See how to unlock Infinite Abyss, a walkthrough on how to complete this Side Commission, its Hollow guide, and its rewards here!

Infinite Abyss Quest Information

Infinite Abyss Commission Details

This commission is part of Eternal Bangboo Causes My Descent on the schedule.

Infinite Abyss Has 99 Floors

Infinite Abyss has 99 floors that you can explore. You only need to reach Floor 15 for S-Rank, but you can explore deeper until the 99th floor for extra Dennies, Elite Supply Boxes, and lore about the commission.

How to Unlock Infinite Abyss

Talk to the Hollow Investigator

Talk to the Hollow Investigator beside Howl's News Stand to receive the commission.

Howl's News Stand Guide

Infinite Abyss Quest Walkthrough

Complete the Commission Using the HDD

After receiving the commission, head inside Random Play and complete the commission using the HDD.

Infinite Abyss Hollow Map

Infinite Abyss Hollow Guide

Infinite Abyss Hollow Map

Infinite Abyss HDD Map Contents
Map 1	Map 2
Map 3

Infinite Abyss has three variations of maps across 99 floors. Map 1 will be found on Floors 1-4. Map 2, however, will be found on floor 6 onwards.

Map 3 can only be encountered on floors 5, 10, and 15, and will contain Observation Data for the stage.

Hollow Deep Dive System Events and Guide

Step-By-Step Guide

1. Use Navigation Beacons on Safety Zones
2. Get Observation Data on Floors 5, 10, and 15
3. Use Mysterious Carrot II to Leave
4. Reach Floor 99 for Lore and Extra Rewards

Use Navigation Beacons on Safety Zones

We recommend using Navigation Beacons on Safety Zones you encounter, whenever your Pressure is building up.

Similar to Hollow Zero, Pressure builds up when you move. Thus, use Navigation Beacons to encounter Safety Zones again on the next floor to avoid Corruption as much as you can!

Hollow Zero Guide and Rewards

Get Observation Data on Floors 5, 10, and 15

All three Observation Data needed for S Rank can be found on floors 5, 10, and 15. These three floors are similar in layout, and you will need to defeat the enemy first to reveal the tile the Observation Data is in.

Use Mysterious Carrot II to Leave

Upon collecting all three Observation Data, you can safely leave through the Mysterious Carrot II tile on Floor 15. Afterwards, talk to the Hollow Investigator again to finish the commission.

(Optional) Reach Floor 99 for Lore and Extra Rewards

The way down to floor 99 will take a lot of time, but will reward you with Extra Dennies, and three Elite Supply Boxes.

After every 5th floor, you also uncover lore about the commission through letters, which concludes at the 99th floor as well.

Pin Navigation Beacon and Sedative Tiles

To continue after floor 15, we recommend pinning Navigation Beacon and Concentrated Sedative tiles to secure an income of Navigation Beacons, and to manage Pressure.

Note that you also receive 1x Navigation Beacon on every floor, and 2x Navigation Beacons after every 5th floor. By doing this, you will have a near-infinite supply of Navigation Beacons and Concentrated Sedatives for the journey down below.

Infinite Abyss Rewards

Quest Rewards

All Quest Rewards
Polychrome x30	Denny x12000	Bangboo Algorithm Module x2
Inter-Knot Credit x600	Elite Investigator's Supply Box x5	Senior Investigator's Supply Box x6

Zenless Zone Zero Related Guides

All Side Commissions

All Exploration Commissions