Bonus Keys are special items that can be given to you at random via the present box upon A-Rank clearing or higher a Featured Quest with the present icon on any difficultly.
You can only receive one present per Featured Quest Ship wide for a total of four presents per day and you're not always guaranteed a key.
The present rolls are doubled if a player with the returner status who has not played for a month is within your party.
Most Bonus Keys expire 168 hours from the time it was obtained, however, Bonus Keys from campaigns often have different expiration durations,
such as a month from when it arrives in the mailbox.
Expired Bonus Keys can be recycled at a rate of 5 Bonus Keys to 1 Bonus Key Tokyo [Gold] Key,
however as of the time of writing it is only 80% efficient (loss of 1 Bonus Tokyo [Silver] Key in EXP).

Rarity Icon Item Name Source Description
7
BonusKeySilverIcon.png ボーナスキー東京【銀】
Bonus Key Tokyo [Silver]
Featured Quest Present, Campaigns, Daily ARKS Mission Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.
7
BonusKeyGoldIcon.png ボーナスキー東京【金】
Bonus Key Tokyo [Gold]
Featured Quest Present, Campaigns, Weekly ARKS Mission, Mission Pass Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.
Has four times EXP of a Tokyo Silver Key.
7
64px ボーナスキー東京【虹】
Bonus Key Tokyo [Rainbow]
Campaigns, Mission Pass only Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.
Has three times EXP of a Tokyo Gold Key.
Grants 100 Sage Crest and 2 mil Meseta on clear.
Has a chance to drop Grind Cap +1.
7
BonusKeySilverIcon.png ボーナスキー禍津【銀】
Bonus Key Magatsu [Silver]
Featured Quest Present, Campaigns Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.
Grants 10 SG on clear.
7
BonusKeyGoldIcon.png ボーナスキー禍津【金】
Bonus Key Magatsu [Gold]
Featured Quest Present, Campaigns Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.
Grants 30 SG on clear.
7
64px ボーナスキー禍津【虹】
Bonus Key Magatsu [Rainbow]
Not Implemented Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.
7
BonusKeyGoldIcon.png ボーナスキーラッピーF
Bonus Key Rappy Fever
Featured Quest Present, Campaigns, Mission Pass Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.
Drops Gathering materials.
7
BonusKeyGoldIcon.png ボーナスキーカヅチ襲来
Bonus Key Kazuchi Assault
Featured Quest Present, Campaigns Bonus Quest Key with a deadline.
Use before the printed
expiration date on the key.