🛠️ 三角洲行动のアップデート履歴
開発元がSteamで公開した公式告知（パッチ、新コンテンツ、イベント）を時系列でまとめています。タイトルをクリックすると全文を読めます。
2026年10月
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10/12月📢 お知らせG.T.I. Security | Penalties for RMT
Dear Operators, The Delta Force security team is committed to maintaining a fair gaming experience, and will impose appropriate restrictions on those found to be cheating or in breach of our terms of …
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10/12月📢 お知らせG.T.I. Security | Notice of penalties for violations
Hello Operators, The Delta Force security team is committed to maintaining a fair gaming experience,and will impose appropriate restrictions on those found to be cheating or in breach of our terms of …
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10/9金✨ 新コンテンツ1v1 Mode & Season Ammo, New Victory Unite Event, Mid-Season Balance Tweaks
Dear Operators, We'll be rolling out an update on 10/9 with no downtime. Gameplay and matchmaking will not be affected. If you encounter any issues after the update, please restart the game to complet…
2026年9月
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9/30水🛠️ パッチ / アップデートDetonation Weapon Balance Adjustments & Arcflare Appearance Draw Available Soon
Dear Operators, We'll be rolling out an update on 9/30 with no downtime. Gameplay and matchmaking will not be affected. If you encounter any issues after the update, please restart the game to complet…
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9/28月📢 お知らせG.T.I. Security | Notice of penalties for violations
Hello Operators, The Delta Force security team is committed to maintaining a fair gaming experience,and will impose appropriate restrictions on those found to be cheating or in breach of our terms of …
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9/24木🎉 イベント2nd Anniversary | New 5v5 Detonation Mode LIVE, 3,900 Limited-Time Delta Tickets
Operators, Detonation (Beta), our new 5v5 Bomb Defusal mode, arrives on September 27 01:00 UTC. Also coming in the 2nd Anniversary Update: 3,900 free Limited-Time Delta Tickets, a free Legendary firea…
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9/22火🎉 イベント2nd Anniversary Celebration Begins | Limited-Time Delta Tickets & Free Bundle
Dear Operators, We'll be rolling out an update on 9/22 with no downtime. Gameplay and matchmaking will not be affected. If you encounter any issues after the update, please restart the game to complet…
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9/21月📢 お知らせG.T.I. Security | Notice of penalties for violations
Hello Operators, The Delta Force security team is committed to maintaining a fair gaming experience,and will impose appropriate restrictions on those found to be cheating or in breach of our terms of …
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9/20日✨ 新コンテンツDelta Force | ANNIVERSARY SEASON STREAMER
Dear Operators, Delta Force Anniversary Season — REORIENTATION is here. To celebrate, we're not throwing a party — we're handing the keys to the creators. A $20K mobile showdown starting from a knife.…
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9/17木🛠️ パッチ / アップデートJoin & Win for Rewards, Operator Balance Adjustments, and More
Dear Operators, We'll be rolling out an update on 9/17 with no downtime. Gameplay and matchmaking will not be affected. If you encounter any issues after the update, please restart the game to complet…
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9/14月📢 お知らせG.T.I. Security | Notice of penalties for violations
Hello Operators, The Delta Force security team is committed to maintaining a fair gaming experience,and will impose appropriate restrictions on those found to be cheating or in breach of our terms of …
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9/10木🛠️ パッチ / アップデート v2.0Layali Grove 2.0 — More Than One Way Through
Layali Grove was never meant to make every decision for you. It was built to leave that choice in your hands. Layali Grove 2.0 gives you more to choose from: take the water, chase the fight, follow a …
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9/9水🛠️ パッチ / アップデートUpdate | Balance Adjustments & Bug Fixes
Dear Operators, We'll be rolling out an update on 9/10 with no downtime. Gameplay and matchmaking will not be affected. If you encounter any issues after the update, please restart the game to complet…
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9/7月📢 お知らせG.T.I. Security | Notice of penalties for violations
Hello Operators, The Delta Force security team is committed to maintaining a fair gaming experience,and will impose appropriate restrictions on those found to be cheating or in breach of our terms of …
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9/6日✨ 新コンテンツVersion Update: New Season 'Reorientation' – Events, Rewards & Store
Dear Operators, We're rolling out a no-downtime update for PC, mobile, and console on September 8 to launch our brand-new season: Reorientation! After the update is complete, jump into the game to exp…
出典：Steam公式告知（6～24時間ごとに更新）。タイトルと概要の著作権は各開発元に帰属します。