Looking for free Gems or Trait Rerolls to strengthen your team in Universal Tower Defense? Redeem these codes!

Our Universal Tower Defense tier list ranks all of the available units you can equip, along with the traits they can have.

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All active Universal Tower Defense codes for Gems and Trait Rerolls.

This guide lists all the Universal Tower Defense codes you can use to earn free Gems and Trait Rerolls, as well as how to ...

In this article, check out the latest information on Universal Tower Defense codes for December 2025 and how to use them.