Undertale Adventures TD codes (July 2025) [QOL+CODE]

Updated: July 15, 2025

We looked for new codes!

Undertale is arguably the most influential indie game of the 2010s, boasting unique retro aesthetics, a riveting soundtrack, and a quirky yet hilarious sense of humor. The title influenced tons of Roblox games, but Undertale Adventures TD managed to stand out from the rest by a long shot!

Your base is under attack, and you’ll need all the help you can get to protect it from an invading force. With Undertale Adventures TD codes, you can easily gain access to tons of valuable items and upgrades to strengthen your defenses and clear challenging levels in no time! If you’re keeping up with the brainrot meme scene, make sure to visit our Brainrot TD codes guide and collect free rewards in the best Italian brainrot experience on Roblox.

All Undertale Adventures TD codes list

Working Undertale Adventures TD codes

• THANKYOU12MILLIONVISITS—Redeem for a Justice Vial, a Magu Fruit, and an Empty Gun (New)

Expired codes

• WINTER2025
• WELOVEUAPLAYERS
• HOTLANDS2025
• UPDATEJUNE10
• JUNE10UPDATE
• THANKYOU10KMEMBERS

Related: Stud Tower Defense Codes

How to redeem codes in Undertale Adventures TD

Here’s how you can redeem Undertale Adventures TD codes hassle-free:

1. Launch Undertale Adventures TD on Roblox.
2. Press the Codes button (1) on the left side of the screen.
3. Type in a working code into the Enter Code text box (2).
4. Press Enter on your keyboard to redeem the code.

How to get more Undertale Adventures TD codes

This guide contains every Undertale Adventures TD code ever released, both active and expired. We scour the web daily for new codes so you can access them from our article as soon as possible. If you’re adamant about looking for new codes on your own, join the Side Productions Roblox group and check out the Side Productions Discord server, where developers post new codes and updates regularly.

Why are my Undertale Adventures TD codes not working?

When redeeming Undertale Adventures TD codes, pay attention to your spelling and make sure that your code is still active, or else you won’t be able to redeem it. Better yet, copy an active code from our list and paste it directly into the game, as that’s the fastest and easiest way to claim your rewards. If you’re struggling with a particular code, let us know in the comments, and we’ll be happy to help you out.

What is Undertale Adventures TD?

Undertale Adventures TD is a Roblox tower defense game based on the legendary RPG title, where you deploy creatures and monsters from the original title along the enemies’ path to destroy them before they reach your base. In between each wave, you can buy items and upgrades to boost your stats, level up your units, and change their placements to destroy enemies more effectively. You can also play with up to three other players to increase your firepower and tackle harder levels more easily.

Look through our extensive Roblox codes section to claim more rewards in the best and most popular games!