Direct answer: Exciting Cube Unboxing runs from July 1, 2026 at 07:00 UTC until the July 15 maintenance. Use Cube Keys during the event to advance missions and claim rewards. The official requirement is completing the main quest HP Recovery!
Event Rewards
- Mission rewards: Star Fragment x500.
- Mission rewards: Cube Key x140.
- Mission rewards: Regular Hero Draw Ticket x10.
- Final completion reward: Star Fragment x500.
How Progress Works
The official notice says Cube Keys used during the event accumulate toward Exciting Cube Unboxing mission progress. Once all missions are cleared and the final progress point is reached, the final Star Fragment reward can be claimed.
Important Reminder
Rewards cannot be claimed after the event ends. Treat this as an active-event checklist item and claim rewards before the July 15 maintenance window begins.
Related Pages
Events Schedule · Daily Checklist · Version 1.6 Update Details · Midsummer Day Surprise Giveaway
Official source: A Joyful Moment - Exciting Cube Unboxing.