Hey, fellow Proxy. I still remember the summer of 2024, when Zenless Zone Zero was still fresh and HoYoverse launched the 'Stock Up' web event. I was refreshing the page daily, flipping cards, and pestering my friends to support me. In 2026, that specific event has been over for a long time, but looking back, it is a perfect time capsule of ZZZ's launch-era hype. If you missed it, here is what it was like. 🎴

What Was the Stock Up Event?

It was a web event, not an in-game mode. That meant I could participate from my phone or browser. The event ran from 2024/05/28 12:00:00 to 2024/07/18 23:59:59 (UTC+8). The inventory exchange period was shorter: 2024/07/04 10:00:00 to 2024/07/18 23:59:59 (UTC+8). So if you earned rewards early, you still had to wait a bit before exchanging them. I remember marking the exchange date on my calendar. 🗓️

How the Card-Flip Game Worked

The core loop was simple, but it had just enough luck to keep me coming back. Each day, I could log in or complete daily missions to get card-flip chances. There was also a Connect Challenge that gave in-game items. But the main attraction was the 3×3 card grid. One card-flip chance let me reveal a 3×3 card, which is nine tiles total. I flipped them one by one. When a horizontal, vertical, or diagonal line of identical rewards appeared, I got that reward. It felt like a mini bingo game, but with Bangboo and Drive Discs instead of numbers. 😅

The Rewards Table

The reward rates were interesting. Here is the breakdown I remember from the event page:

I never hit the A-Rank W-Engine, but I did get a few Boopon and a pile of Denny. Honestly, the Denny was useful for early progression. The A-Rank Drive Discs were the real prize for most players. If you were building a character around Woodpecker Electro or Shockstar Disco, this event was a nice shortcut. 🎁

The Lucky Prize Draw

The 'Lucky Prize' special event was the part that made my friend group chat explode. During the event, Proxies who participated in the Lucky Prize event and completed event tasks could claim draw chances. Those chances went into a draw for physical prizes. And the prize list was wild:

I wanted that Bangboo rug so badly. I did not win it, but I know someone who got a phone stand. They still use it. In 2026, that feels like ancient history, but the merch was genuinely cool. 🏆

Inviting Friends and Supporting Each Other

The social side was clever. After logging in with a HoYoverse Account, I could generate an exclusive invitation link on the event page. I shared it with friends, and for each friend who successfully supported me through that link, I got 2 prize draw opportunities. There was also a daily bonus: I got 1 extra card-flip chance when a friend supported me for the first time each day. That extra flip was small, but it added up.

Supporting friends worked both ways. I could support up to 5 friends during the event. Each time I supported a friend, I got 2 prize draw attempts. So the event encouraged a little community hustle. I remember trading links in Discord servers and group chats. It was chaotic, but fun. Each Proxy could obtain up to 30 prize draw attempts total. That cap kept things fair, I guess. 🤝

Why It Still Matters in 2026

As of 2026, Zenless Zone Zero has grown a lot. New agents, new stories, new events. But the 'Stock Up' web event is a reminder of the launch era, when every login felt like a new discovery. It was not a massive gameplay event. It was a promotional web event, and it did its job: it got players talking, sharing, and logging in daily.

If you are reading this in 2026 and wondering whether you can still participate, the answer is no. The event ended on 2024/07/18. The prizes have been claimed. The cards have been flipped. But if you want to understand what early ZZZ hype felt like, this event is a good snapshot. It had card-flipping, friend invites, physical prizes, and a lot of Denny. That is a pretty accurate summary of the launch experience. 😄

My Final Take

Would I do it again? Absolutely. The card-flip mechanic was lightweight, the rewards were decent, and the Lucky Prize draw gave me a reason to check in even on slow days. If HoYoverse ever runs a similar web event for a future ZZZ anniversary, I will be there. I will probably still lose the iPhone draw, but I will get at least one Boopon. And honestly, that is enough for me. 🎉