The game takes you to the post-apocalyptic world, where human civilization is in ruins and different factions take its place. The instability is only part of it; the danger also lurks in the Echo Crystals. You and the Kemono girls are the hope of this era and you must keep upgrading the characters, otherwise enemies will use your weakness to spread their terror. So if you are low on resources, you can use these Echocalypse codes to complete and improve your team.

Here are all the new working Echocalypse codes:

These are the invalid ones, don't try them:

The codes are case sensitive, so make sure you type them as they are.