If you are jumping into Universal Tower Defense on Roblox this month, there is some good news. A fresh batch of Universal Tower Defense codes for December 2025 is now live, giving players a stack of free Gems and Trait Rerolls to help build stronger teams faster.
These codes are especially handy if you are getting overwhelmed by later waves or want better Units inspired by anime favourites like Naruto, One Piece, and Dragon Ball Z. Below, you will find every working code, how to redeem them, and what to do if a code is not working.
What Is Universal Tower Defense?
Universal Tower Defense is a Roblox strategy game that blends classic tower defence gameplay with anime-inspired heroes. Players summon Units, place them across large maps, and defend their base against wave after wave of enemies.
If you enjoy games like Anime Last Stand or Anime Vanguards, Universal Tower Defense should feel right at home. Gems are used to summon new characters, while Trait Rerolls help fine tune your Units to get better abilities and stats.
All Working Universal Tower Defense Codes, December 2025
Here are all the currently active Universal Tower Defense codes as of December 16, 2025. Some codes require you to reach a certain level before they can be redeemed.
| Code | Rewards | Requirement |
|---|---|---|
| ThousandsOfCodes! | 800 Gems, 15 Trait Rerolls | Must be level 5 or higher |
| MaxedOut! | 600 Gems, 10 Trait Rerolls | Must be level 5 or higher |
| SixSeven! | 67 Trait Rerolls | Must be level 15 or higher |
| FixingBugs! | 450 Gems, 25 Trait Rerolls | None |
| 75kLikes! | 400 Gems, 10 Trait Rerolls | None |
| NumberOne! | 500 Gems, 15 Trait Rerolls | None |
| Universal! | 450 Gems, 15 Trait Rerolls | None |
| Mainstream! | 450 Gems, 15 Trait Rerolls | None |
| ThankYouUTD! | 400 Gems, 5 Trait Rerolls | None |
| 40kCCU! | 4,000 Gems, 40 Trait Rerolls | None |
| THANKYOU! | 400 Gems | None |
| RELEASE! | 400 Gems | None |
| UNRIVALED! | 200 Gems, 5 Trait Rerolls | None |
Codes can expire quickly, so it is worth redeeming them as soon as possible.
How to Redeem Universal Tower Defense Codes in Roblox
Not sure how to claim your rewards? Redeeming Universal Tower Defense codes is quick and easy.
- Launch Universal Tower Defense in Roblox
- Select the Codes button on the right side of the screen, or open the shop menu depending on your layout
- Type or paste a working code into the text box
- Press Redeem and enjoy your free Gems and Rerolls
Make sure the code is entered exactly as shown, including capital letters and punctuation.
Why Are My Universal Tower Defense Codes Not Working?
If a code does not work, there are a few common reasons:
- The code has expired
- You have not reached the required player level
- The code was typed incorrectly
To avoid errors, copy and paste codes directly from the list above and double check that you are redeeming from the active section.
All Expired Universal Tower Defense Codes
The following Universal Tower Defense codes are no longer active and cannot be redeemed:
- ThankYouEA!
- SorryEA!
- SorryEA2!
Expired codes are usually removed during updates or replaced with new rewards.
How to Get More Universal Tower Defense Codes
The best way to stay up to date is to bookmark this page and check back regularly. New codes are often released to celebrate updates, milestones, or bug fixes.
There is also an official Universal Tower Defense Discord server, where developers share news, updates, and sometimes new codes. It is a good place to find tips, meet other players, and keep an eye on upcoming content.
Universal Tower Defense continues to grow on Roblox, and these December 2025 codes make it easier than ever to summon powerful Units and refine your team. If you are diving in this month, do not forget to grab your freebies before they expire.