The inventory maximum for each key color is 9999.
Types of Keys
|Picture||Color||Drops from:||Forged from:|
|Blue||Blue Keybooths, blue vaults (rare) and green vaults (common)||-|
|Green||Green Keybooths (special events), blue vaults (very rare) and green vaults (rare)||10 blue keys|
|Yellow||Green vaults (very rare) and yellow vaults (rare)||10 green keys|
|Red||Yellow vaults (very rare) and red vaults (rare)||10 yellow keys|
|Purple||Red vaults (very rare) and purple vaults (rare)||10 red keys|
There are four main ways of acquiring keys: from keybooths, from random drops, from forging and from Uservaults.
Players can receive keys as random drops from Prize Boxes upon solving vaults. See the table above for more information.
Players can use a Forge to create a higher tier key from 10 lower tier keys. For instance, 10 blue keys can be forged into one green key .
Players receive 5% of all keys used on their Uservaults per mail.