Zenless Zone Zero Version 3.1 New Eridu City Fund: Rewards, Plans, and Dates
The New Eridu City Fund returns in Zenless Zone Zero Version 3.1 with multiple reward tiers and progression-based rewards. Players can raise their City Fund Level by completing Expansion Tasks and unlock additional rewards through the Basic, Growth, and Premium Plans.
The Version 3.1 City Fund runs from the Version 3.1 update until September 7, 2026, at 03:59 server time. However, purchases close one hour earlier, at 02:59 server time, so players need to check the separate purchase deadline before upgrading their plan.
New Eridu City Fund Version 3.1 Summary
The City Fund is a progression-based reward system that gives players more rewards as they increase their Fund Level. The Basic Plan is available automatically when the season starts, while the Growth and Premium Plans provide additional rewards.
The Growth Plan immediately grants 680 Polychromes and the exclusive “Berry Party” avatar. The Premium Plan adds more instant rewards, including 208 additional Polychromes, a menu decoration set, Microcontroller Unit, Resonating Core, and Ether Batteries.
Players who unlock either paid plan can continue earning rewards by increasing their City Fund Level. These rewards include the exclusive “Time for Afternoon Tea” namecard, Microcontroller Unit, Resonating Core, Hamster Cage Pass, and other upgrade materials.
| City Fund Detail | Version 3.1 Information |
|---|---|
| Event | New Eridu City Fund |
| Start | After the Version 3.1 update |
| End | September 7, 2026, at 03:59 server time |
| Purchase Deadline | September 7, 2026, at 02:59 server time |
| Entry Requirement | Unlock Combat Simulation |
| Required Story | Chapter 1 “Cat's Lost & Found” |
| Basic Plan | Automatically unlocked |
| Growth Plan | 680 Polychromes + “Berry Party” avatar |
| Premium Plan | Additional instant rewards and upgraded reward track |
| Progression | Complete Expansion Tasks to increase City Fund Level |
New Eridu City Fund Plans Explained
The three City Fund plans provide different levels of rewards and access. Every season begins with the Basic Plan, while the Growth and Premium Plans offer additional rewards for players who unlock them.
Basic Plan
The Basic Plan is automatically available at the beginning of each City Fund season. Players do not need to purchase this plan to start progressing through the Fund.
Expansion Tasks provide the experience needed to increase the City Fund Level. Raising the level unlocks the rewards assigned to the current progression track.
The Basic Plan therefore lets players participate in the City Fund even without upgrading their plan.
Growth Plan
The Growth Plan immediately gives 680 Polychromes and the exclusive “Berry Party” avatar. It also unlocks additional rewards as players continue increasing their City Fund Level.
This plan targets players who want more rewards beyond normal City Fund progression. Players can continue completing Expansion Tasks after unlocking it.
Premium Plan
The Premium Plan provides the largest reward package among the available plans. It includes additional instant rewards alongside the expanded City Fund progression rewards.
The immediate Premium Plan rewards include 208 Polychromes, a menu decoration set, Microcontroller Unit, Resonating Core, and Ether Batteries.
Players who have already unlocked the Growth Plan can also use the Plan Upgrade option to move to the Premium Plan.
| Plan | Main Benefits |
|---|---|
| Basic Plan | Automatically unlocked; access to standard City Fund progression |
| Growth Plan | 680 Polychromes, “Berry Party” avatar, and additional progression rewards |
| Premium Plan | Additional 208 Polychromes, menu decoration set, Microcontroller Unit, Resonating Core, Ether Batteries, and expanded rewards |
| Plan Upgrade | Allows Growth Plan owners to upgrade to Premium |
How to Increase Your City Fund Level
Players increase their City Fund Level by completing Expansion Tasks. These tasks provide the experience needed to move through the Fund’s reward progression.
The system is built around regular gameplay, not a separate combat mode. Players can work through the available tasks and gradually unlock rewards as their Fund Level increases.
Higher Fund Levels provide access to more items, including upgrade resources and exclusive City Fund cosmetics.
Choosing Upgrade Materials
The City Fund lets players choose the type of upgrade materials they want to receive. This gives players more control over which resources they collect during Version 3.1.
This choice can help when upgrading specific Agents, W-Engines, or other parts of an account. Instead of receiving one fixed material type, players can select the resources that better match their current progression needs.
City Fund Level 30 and the Great Builder’s Certificate
Reaching City Fund Level 30 after unlocking the Growth or Premium Plan unlocks the Great Builder’s Certificate. This certificate is tied specifically to the current City Fund period.
The Great Builder’s Certificate is not a permanent item. Players must use it during the current City Fund period because it will not carry over into the next City Fund season.
The certificate also expires automatically if players fail to use it within its specified time limit. Players should therefore avoid treating it like a permanent resource that can be saved indefinitely.
New Eridu City Fund Important Dates
The City Fund remains available until September 7, 2026, at 03:59 server time, but plan purchases close at 02:59. This one-hour difference matters for players who plan to unlock or upgrade their plan near the end of the event.
After the purchase period closes, players can still complete their Expansion Tasks and claim available rewards. The end of plan purchases does not immediately end City Fund progression.
Purchase Deadline vs. Event Deadline
The purchase deadline comes one hour before the overall event ends. Players should therefore decide whether they want the Growth Plan, Premium Plan, or Plan Upgrade before purchases close.
Players with an eligible plan can keep working on their City Fund progress after the purchase window ends.
Who Can Participate in the City Fund?
Players must unlock Combat Simulation through Main Story Chapter 1, “Cat’s Lost & Found,” to access the New Eridu City Fund. New players who haven't reached this point in the story can't participate yet.
Once Combat Simulation is unlocked, players can access the City Fund and begin completing Expansion Tasks.
This requirement also means that players should focus on early story progression if they want to take part in the Version 3.1 City Fund rewards.
What Makes the Version 3.1 City Fund Useful?
The City Fund combines regular progression with a large selection of upgrade materials and exclusive cosmetics. Players can earn resources while completing tasks they would already perform during normal account development.
The Premium track stands out for its extra instant rewards. Meanwhile, the Growth Plan provides a smaller entry point with 680 Polychromes and the “Berry Party” avatar.
For players interested in the wider Zenless Zone Zero ecosystem, in-game updates and official merchandise are separate areas. Stores such as Animon Life may carry official merchandise for North American fans, while New Eridu City Fund rewards are earned directly in-game.
Tips for Completing the Version 3.1 City Fund
Start Progress Early
Starting the City Fund early gives players more time to complete Expansion Tasks. This is particularly useful for anyone aiming for higher Fund Levels before the September 7 deadline.
Watch the Purchase Cutoff
Players who want to purchase or upgrade a plan must do so before September 7 at 02:59 server time. Waiting until the final hour could mean missing the opportunity to upgrade.
Use the Great Builder’s Certificate
Players who reach City Fund Level 30 should remember to use their Great Builder’s Certificate before it expires. The item is limited to the current City Fund period and does not carry over to the next season.
Choose Materials Based on Current Needs
Match the selectable upgrade materials to your current account priorities. Players can use this flexibility to focus on resources needed for their active Agents and equipment.
Final Takeaway
The Version 3.1 New Eridu City Fund rewards players for completing Expansion Tasks and increasing their City Fund Level. The Basic Plan is automatically available, while the Growth and Premium Plans unlock additional rewards.
Players can participate after unlocking Combat Simulation in Chapter 1, “Cat’s Lost & Found.” Those who reach City Fund Level 30 with the Growth or Premium Plan can also claim the limited-time Great Builder’s Certificate.
The most important deadline is September 7, 2026, at 02:59 server time for plan purchases. The overall City Fund remains active until 03:59 server time that day, allowing eligible players to finish tasks and claim rewards after purchases close.
Frequently Asked Questions
When does the Version 3.1 New Eridu City Fund end?
The City Fund ends on September 7, 2026, at 03:59 server time. Plan purchases close earlier, at 02:59 server time.
What do you get from the Growth Plan?
The Growth Plan immediately provides 680 Polychromes and the exclusive “Berry Party” avatar. It also unlocks additional progression rewards.
What does the Premium Plan include?
The Premium Plan provides additional instant rewards, including 208 Polychromes, a menu decoration set, Microcontroller Unit, Resonating Core, and Ether Batteries. It also provides access to additional City Fund rewards.
What happens to the Great Builder’s Certificate?
The Great Builder’s Certificate is limited to the current City Fund period. It will not carry over to the next City Fund and expires automatically if you don't use it within the allowed time.
Animon Life continues to follow and update official merchandise releases like this for North American customers.
