Codes are often randomly generated alphanumeric strings of 30 characters which can reward players with Currency or Card Packs when redeemed. They are usually given out on the Idle Online Universe Facebook Page.
A code can only be claimed in limited quantities, the number of which is sometimes announced when the code is handed out. Usually, the codes will expire after 2 weeks if all redeems have not yet been used. Most codes will award a random resource, which scales with the player's level. Specific Bonus's and Event codes will usually give the same reward for all players.
How to redeem a code
To redeem a code a player needs to open the Social drop-down menu or press the key 'O', and choose Code. A pop-up window will appear where the player can input or copy-paste the code.
To find codes, click Codes? In the pop-up window, and it will direct you to the Idle Online Universe Facebook Page or refer to the Code List below.
Extra spaces are automatically trimmed as of 0.51 Zeta.
Code List
Expired codes are removed from the list. Expiry column shows the estimated last day that they are usable.
| Date Released | Codes | Expires (Approx.) |
| June 12th | wheredidtheweekendgo? | June 19th |
| June 12th | Mondayalready | June 19th |
| June 11th | don'tlikeplanes | June 18th |
| June 11th | crappyinternet | June 18th |
| June 10th | Windfall | June 17th |
| June 10th | it'stheweekend | June 17th |
| June 10th | freakyfriday | June 17th |
| June 9th | Taradiddle | June 16th |
| June 9th | Flibbertigibbet | June 16th |
| June 8th | Gardyloo | June 15th |
| June 8th | Bumbershoot | June 15th |
| June 7th | zoanthropy | June 14th |
| June 7th | oxter | June14th |
| June 6th | Mondayshouldbeoptional | June 13th |
| June 6th | HaveaterrificTuesay | June 13th |