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What is the purpose of the Buck Capsule in Arknights: Endfield?

PearcePearceFebruary 23, 2026

Buck Capsules are an important item in Arknights: Endfield. They play a crucial role in restoring Operators' health, providing timely support during critical moments in battle, helping Operators quickly recover and continue fighting in intense confrontations.

1️⃣ Acquisition Methods

1. Stage Drops: In specific main story stages or dungeons, players have the chance to obtain Buck Capsules by defeating enemies. This requires players to carefully plan their game routes and prioritize stages with higher drop rates to ensure a steady acquisition of capsules.

2. AIC Producing: When unlocking the corresponding AIC Basic Plan, you can produce Buck Capsules automatically. It requires relatively simple materials—primarily Ferrium Bottles and Buckflower Powder.

2️⃣ Timing of Use

1. When health is critical in battle: When an Operator takes heavy damage and their HP is critically low during combat, using a Buck Capsule immediately restores a significant amount of health, preventing the Operator’s death and preserving strength for the ongoing battle.

2. Before challenging difficult stages: If you are about to face a high-difficulty stage, use Buck Capsules in advance to keep your Operators at full health. This allows you to handle unexpected situations more calmly and increases the chances of clearing the stage.

3️⃣ Comparison with Other Items

1. Compared to low-tier recovery items: Buck Capsules [A] restore significantly more health than low-tier recovery items, allowing for more efficient replenishment of an Operator's HP and playing a greater role in critical moments.

2. Comparison with advanced recovery items: Although advanced recovery items may have stronger healing effects, the Buck Capsule [A] offers the advantages of easier acquisition and flexible use. In certain emergencies, it can be deployed more quickly without relying on valuable advanced items.

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4️⃣ Strategic Combinations

1. Coordination with Supporter Operators: When there are Supporter Operators in the team, the Buck Capsule can serve as a supplementary measure. If Supporter operators are unable to heal in time or the healing amount is insufficient, using the capsule can provide an emergency effect, ensuring the overall survivability of the team.

2. For specific Operators: For key Operators with low HP but strong output capabilities, the Buck Capsule can serve as an exclusive survival item. Prioritize ensuring the survival of these Operators in battle to maximize their effectiveness.

Buck Capsules are one of the indispensable items in Arknights: Endfield. By acquiring them strategically, timing their use appropriately, and combining them with effective tactics, players can maximize their effectiveness in battle, helping them progress smoothly through the game world and overcome various challenges.

Pearce
Pearce
Game Writer
Pearce is a strategy analyst and content creator specializing in gacha-based anime games. As a day-one player of multiple hit titles including Genshin, ZZZ, WuWa, and Arknights: Endfield, he brings over five years of deep, hands-on experience. He excels in resource management, gacha probability analysis, and high-level version meta research. His content on Rushbuy focuses on forward-looking character evaluation, team composition, and long-term progression roadmaps, leveraging data breakdowns and practical testing to help players maximize their in-game experience within their budget.
Pearce
Pearce
Game Writer
Pearce is a strategy analyst and content creator specializing in gacha-based anime games. As a day-one player of multiple hit titles including Genshin, ZZZ, WuWa, and Arknights: Endfield, he brings over five years of deep, hands-on experience. He excels in resource management, gacha probability analysis, and high-level version meta research. His content on Rushbuy focuses on forward-looking character evaluation, team composition, and long-term progression roadmaps, leveraging data breakdowns and practical testing to help players maximize their in-game experience within their budget.