Universal Tower Defense Codes Roblox - Latest for Gems & Rerolls

If you’re playing Universal Tower Defense on Roblox, redeeming active codes is one of the easiest ways to speed up progression. These codes give you free Gems and Trait Rerolls, which directly affect how quickly you can summon, upgrade, and optimize your units.

Below is a complete, link-free breakdown of all currently working Universal Tower Defense codes, how to redeem them, and what you can expect from each reward.

Universal Tower Defense active codes (December 2025)

Code	Rewards
40kCCU!	4,000 Gems, 40 Trait Rerolls
YT10k!	2,000 Gems
ThankYou30M	500 Gems, 15 Trait Rerolls
UnrivaledIsAlive	800 Gems, 20 Trait Rerolls
ThankYouFor150k	1,500 Gems, 50 Trait Rerolls
HereyougoEA!	2,000 Gems, 20 Trait Rerolls, 5 Stat Locks (Early Access)
ThankYou100k	100 Trait Rerolls
ThousandsOfCodes!	800 Gems, 15 Trait Rerolls
MaxedOut!	600 Gems, 10 Trait Rerolls
SixSeven!	67 Trait Rerolls
FixingBugs!	450 Gems, 25 Trait Rerolls
75kLikes!	400 Gems, 10 Trait Rerolls
NumberOne!	500 Gems, 15 Trait Rerolls
Universal!	450 Gems, 15 Trait Rerolls
Mainstream!	450 Gems, 15 Trait Rerolls
ThankYouUTD!	400 Gems, 5 Trait Rerolls
THANKYOU!	400 Gems
RELEASE!	400 Gems
UNRIVALED!	200 Gems, 5 Trait Rerolls

What can you get from the codes

Reward type	What it does
Gems	Used for summoning units and progression systems
Trait Rerolls	Reroll unit traits to improve stats and performance
Stat Locks	Lock specific stats while rerolling traits

Why codes might not work

Issue	Reason
Code expired	Codes are time-limited
Incorrect spelling	Capital letters and symbols matter
Already redeemed	Most codes can only be used once
Early Access code	Some codes only work for EA players

Tips for finding more codes

Follow the game’s official Discord or social channels — developers often drop new codes there first.
Check fan communities regularly as codes are released around updates, milestones, or events.