Zenless Zone Zero EXP Farming Guide: Level Up Agents, Bangboos & W-Engines Fast in 2026

Hey there, fellow Proxies! Let's be real for a second—when you first dive into the chaotic, vibrant streets of New Eridu, the sheer amount of EXP materials needed to level up your team can feel totally overwhelming, right? It's like your agents, your trusty Bangboos, and those flashy W-Engines are all hungry little monsters with different food preferences. Don't worry, though; I've been grinding through Hollow Zero and the city's nooks and crannies since launch, and I'm here to break down the most reliable ways to farm every single EXP material you'll need in 2026. Forget the guesswork; let's get your squad battle-ready efficiently!

Leveling Up Your Agents: The Investigator Log Grind

Your agents are the heart of your team, and to make them stronger, you need Investigator Logs. Think of these as their personal training manuals or... well, their EXP candy. There are three tiers, each getting progressively juicier:

• Trainee Investigator Log: The basic stuff. Good for early levels.

• Official Investigator Log: The mid-tier upgrade. You'll need tons of these.

• Senior Investigator Log: The premium stuff. Use these sparingly on your main DPS characters!

So, where do you get these bad boys? Honestly, your daily and weekly activities are your best friends here. Make sure you're clearing your Daily Commissions and Weekly Missions—they shower you with these logs. Also, don't sleep on the Hollow Zero exploration runs; the deeper you go, the better the rewards. The game's kinda generous if you know where to look!

Powering Up Your Bangboo: Modules & Widgets Galore

Ah, Bangboos. These little guys aren't just for show; a maxed-out Bangboo can turn the tide of a tough fight. To upgrade them, you'll need a trio of items:

1. Software Patches

2. Algorithm Modules

3. System Widgets

The primary source for all Bangboo EXP materials is, you guessed it, Hollow Zero. Those rogue-like dungeon runs are basically a Bangboo part supermarket. But here's a pro tip: if you're running low on a specific type, check the Convenience Store regularly! They sometimes have rotating stock, and you can use your in-game currency to snag what you need. It's a lifesaver when you're just a few modules short of an upgrade. Seriously, that store clerk knows what's up.

Supercharging W-Engines: Battery Management 101

Your W-Engines are the key to unlocking your agents' full potential, giving them those awesome skills and buffs. To level them up, you're hunting for:

• Batteries

• Power Supplies

• Energy Modules

The most consistent farm for these is the Combat Simulation at the HIA center. It's a pure test of your team's strength, and the rewards are totally worth it. But wait, there's more! One of the best-kept secrets is the Signal Shop. You can often purchase higher-tier Energy Modules here using Signal Coins, which you get from pulling on banners. So even if your pulls didn't get you that new S-rank agent, you can still walk away with valuable upgrade materials. It's a nice consolation prize, isn't it?

Don't Forget the Drive Discs: Plating Agents

While not a direct character level, your Drive Discs (the game's artifact/equipment system) need love too! Their EXP material is called Plating Agents. There are three types, each giving a different amount of EXP to your discs. You'll primarily find these as rewards for... pretty much everything—story progression, event rewards, and opening chests all over the city.

2026 Farming Efficiency Checklist

To wrap it all up, here’s your weekly routine checklist to maximize your EXP gains:

The meta is always evolving, but the need for EXP never changes. Stick to this plan, and you'll have a roster of max-level beasts in no time. Now go out there and show Hollow Zero who's boss! What's your favorite farming spot? Let me know in the comments 👇