🛠️ Synduality: Echo of Ada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9月
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9/28月📢 お知らせImportant Notice
SYNDUALITY Echo of Ada will conclude its current online service after May 2027 and transition to an offline version.For details regarding the upcoming schedule, the handling of paid currency, and addi…
2026年7月
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7/6月✨ 新コンテンツSEASON 5 "DRIFTERS" IS NOW LIVE!!
SEASON 5 "DRIFTERS" IS NOW LIVE!!Your fate is in your hands.A new era, forged by Drifter and Magus.May fortune shine on your journey.
2026年5月
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5/15金✨ 新コンテンツ▽ DLC “Season 4 Additional Content Pack” INTERMISSION Now Available ▽
— Ready for the new journey?You’ve traveled alongside your Magus.Those countless paths have become tracks, and those tracks will one day become a road.This is the crossroads. — Now, it’s time to choos…
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5/14木✨ 新コンテンツ v4.5▽ SEASON 4.5 Update “STORM HUNT” Now Live ▽
―Ready for the New Journey？Dig, Collect, Fight, Steal, Get robbed.And bring it home through unbreakable grit.Association member? Bounty hunter?No — you are wandering, elite drifters.The hunt begins—“S…
2026年3月
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3/19木✨ 新コンテンツ‼️SEASON 4 “CROSSROADS” HAS BEGUN‼️
The remnants of conflict.How does a once endless battle conclude...?SEASON 4 “CROSSROADS” Roadmap Revealed!A new exploration map “Sunny Polluted Forest”, the new feature “Magus Memory Expantion”, the …
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3/19木🎉 イベント▽Event Infromation▽
Thank you for participating in the Drifter Attack Challenge Event!Once the results have been tallied, rewards will be distributed to players who achieved the event goals listed below✨Goal 1: Defeat 2 …
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3/18水✨ 新コンテンツ▽SEASON4『CROSS ROADS』配信日が3/19に決定‼▽
The remnants of conflict.How does a once endless battle conclude...?Acquire Magus Enhancement Chips, escape from dangerous zones,and upgrade your partners to prepare for the future that lies ahead!— R…
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3/13金📢 お知らせ▽ x2.0 XP Campaign ▽
Hello Drifters!The x2.0 XP campaign is live at the time below!March 12, 2am - March 19, 2am \March 12, 10am - March 19, 10am \March 12, 6pm - March 19, 6pm \Don't miss this chance and claim your Drift…
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3/13金🎉 イベント▽1st Anniversary Event – Part 3▽
The final event of Season 3 is here!As the third part of our 1st Anniversary celebration, we’re launching the Drifter Attack Challenge Event!\Earn the crafting recipe for the metallic JOHNGASMAKER MG!…
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3/6金🎉 イベント▽ Exploration Material Item Total Value Challenge Event - Final Results▽
As a commemoration of achieving the Exploration Material Item Total Value Challenge Event, we will distribute the following items:The final score is 72,015,895,710 Money!\- 1st Anv Everyone's Friends …
2026年2月
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2/27金📢 お知らせ▽ x1.5 XP Campaign ▽
The x1.5 XP campaign is live at the time below!February 27, 1am - March 2, 1am \February 27, 10am - March 2, 10am \February 27, 6pm - March 2, 6pm \Don't miss this chance and claim your Drifter Pass r…
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2/26木🎉 イベント▽[1st Anniversary Event] Part 2 ▽
As the second part of our 1st-anniversary celebration, we're holding the "Exploration Material Item Total Value Challenge Event"!\Let's aim for a total value of 50,000,000,000 Money for the "Material …
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2/20金🎉 イベント▽Challenge Event Achieved!▽
To commemorate the completion of this event, we will be distributing the following items.The final score (total number of eliminations) reached 1,147,074!*Bandit Bosses are worth 5 bandits, and the Bu…
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2/13金🎉 イベント▽ SYNDUALITY Echo of Ada - 1st Anniversary XP Boost Campaign 🎉▽
The last phase of the campaign will be held on the following schedule!Earn tons of XP and claim your Drifter Pass rewards! 💰▽ Campaign Period ▽Phase 3: XP x2.0February 13, 9:00 - February 16th, 9:00 \…
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2/12木📢 お知らせ▽Bandit Blitz: Hunt Down the Bandits!▽
\Drifters, newbies and veterans, unite to crush a total of 1,111,111 bandits during this event!Elite targets will earn bonus points: Bandit Bosses are worth 5 bandits, and the Butchers are worth 10 ba…
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。