Arknights: Endfield has launched a new limited-time event that is especially useful for those who are currently farming for upgrade materials and other progression resources. The new Sanity Supply event is going live today and gives you free daily stamina-related rewards for simply completing a few missions each day.
Free Sanity Refills Every Day
During the event, you can earn 4 Emergency Sanity Boosters and 8 Sanity Usage Permits. If you just started the game and you do not know what those are used for, Sanity basically functions as the game’s “stamina” mechanic. It is required for most farming activities, including material and resource stages. This just means that you can run a few more stages every day, and that is always useful, especially early in the game when you are still building characters and teams.
The Emergency Boosters refill your Sanity, and the usage Permits allow you to claim double rewards in one run.
The event runs from May 7, 2026, at 04:00 to May 14, 2026, at 04:00 (server time). To participate, you also have to complete the main story “Chapter I Process II: Paving the Way”.
How the Event Works
During the event, three Sanity Supply missions become available each day and refresh at the daily reset. Once completed, the rewards are not automatically claimed, so you will need to collect them manually before the next refresh.
It is a pretty simple event overall, but free stamina is always one of the most valuable resources in a gacha game, especially when you are trying to max out your characters, where material farming becomes increasingly expensive.
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