Blue Archive Launches Millennium Expo Cleanup Event: Rewards, Dates & Issues

Dive into Blue Archive’s Millennium Expo Cleanup event! Discover rewards, participation tips, and key fixes for Steam and mobile players.

EarlyGG EarlyGG
Tue Jul 08 2025
Blue Archive Launches Millennium Expo Cleanup Event: Rewards, Dates & Issues


Blue Archive Millennium Expo Cleanup Event: Rewards, Dates, and Participation Guide

Blue Archive fans, get ready for a fresh wave of in-game excitement! The highly anticipated Millennium Expo Cleanup Event has landed, bringing new stories, daily rewards, and a few technical twists. Whether you're a seasoned Sensei or just starting your journey, this event offers a unique blend of narrative and loot—but also some hurdles for Steam and mobile users. Curious about how to maximize your rewards and avoid common pitfalls? Read on for all the essential details, expert insights, and community reactions.

C&C Students Take Center Stage at the Millennium Expo

The Millennium Expo is abuzz as the C&C students—including fan favorites like Asuna, Karin, Akane, Toki, and Neru—embark on a special cleaning mission. This event isn't just about sweeping up; it's a chance for players to engage with new episodes, unlock exclusive rewards, and immerse themselves in the world of Blue Archive.

Event Schedule: Mark Your Calendars

  • Start: July 8 (after maintenance)
  • End: July 21, 6:59 PM (UTC)

Each day, a new episode featuring a different C&C student is revealed at 7:00 PM (UTC). Players can claim one reward per day, so daily logins are key to maximizing your haul.

How to Participate: Step-by-Step Guide

Participating in the Millennium Expo Cleanup Event is straightforward, but there are a few nuances to keep in mind:

  1. Access the Event:
    • Tap the C&C Cleanup Report! (Web Event) banner at the top right of the lobby.
  2. View Episodes:
    • Episodes unlock daily at 7:00 PM (UTC). Check back each day for new content.
  3. Claim Rewards:
    • Tap "Check Replies" on each episode to instantly receive your event gift in your mailbox (valid for 7 days, one per account).
  4. Complete the Series:
    • Once all rewards are claimed, no additional rewards can be earned from this event.

Pro Tip: Only one episode and reward can be claimed per day. If you join late, you'll start from the first available episode.



Event Rewards: What’s Up for Grabs?

Blue Archive is known for its generous event rewards, and the Millennium Expo Cleanup is no exception. Here’s a breakdown of what you can earn:

| Episode | Release Time | Event Reward |
|————-|——————|——————|
| Asuna | 7/8 (After Maintenance) | T8 Equipment Blueprint Choice Box x100 |
| Karin | 7/8, 7:00 PM (UTC) | Beginner Tactical Training Blu-ray Choice Box x20
Normal Tactical Training Blu-ray Choice Box x15
Advanced Tactical Training Blu-ray Choice Box x10 |
| Akane | 7/9, 7:00 PM (UTC) | Pyroxene x200 |
| Toki | 7/10, 7:00 PM (UTC) | Pyroxene x200 |
| Neru | 7/11, 7:00 PM (UTC) | Pyroxene x200 |

All rewards are delivered via in-game mail titled "The Special Event Reward has arrived."

Known Issues: Steam and Mobile Users Take Note

While the event is packed with content, some technical hiccups have emerged:

  • Steam Client Limitation:

    • Players using the Steam client cannot participate directly in webview events. However, your gameplay history is still tracked and reflected in event progress.
    • Solution: Access the event via your mobile device to participate and claim rewards.
  • Mobile Webview Issues:

    • Some mobile users may encounter problems accessing the event or claiming rewards under certain conditions.
    • Solution: Refer to the Known Issues Notice for troubleshooting steps.

Industry Insight: Cross-platform compatibility remains a challenge for many gacha games. Blue Archive’s approach—tracking progress across platforms but requiring mobile for participation—reflects a growing trend of prioritizing mobile-first experiences while maintaining PC support.

Participation Rules and Important Notes

  • One Reward Per Day: Only one episode and reward can be claimed daily.
  • Account Linking Required: Guest accounts are ineligible. Link your account to join the event.
  • No Re-entry: Closing your account after participating means you cannot re-enter the event.
  • Event Deadline: All participation and reward claims must be completed by July 21, 6:59 PM (UTC).

Community Reactions and Future Implications

The Blue Archive community has responded with enthusiasm to the Millennium Expo Cleanup event, praising the daily episodic format and generous rewards. However, some frustration lingers among Steam users who must switch to mobile to participate fully. As cross-platform play becomes increasingly important in the mobile gaming industry, events like this highlight both the opportunities and growing pains of multi-device support.

Looking ahead, players are hopeful that future events will offer more seamless integration across platforms. For now, the Millennium Expo Cleanup stands as a testament to Blue Archive’s commitment to engaging storytelling and rewarding gameplay.



Final Thoughts

The Millennium Expo Cleanup event is a must-play for any Blue Archive fan. With daily episodes, valuable rewards, and a spotlight on beloved C&C students, it’s the perfect opportunity to dive deeper into the game’s world. Just remember to log in daily, link your account, and use your mobile device if you’re a Steam player. For more Blue Archive news, guides, and tier lists, check out early.gg and join the conversation!

Images: Official Blue Archive event banners. Alt text: Blue Archive Millennium Expo Cleanup event banner featuring C&C students.

Share this guide

Twitter Facebook LinkedIn