Looking for the latest Undertale Rebuild TD codes? We’ve got you covered! This list includes all of the active codes that will give you free rewards like spins and gems.
If you’re actively playing other Roblox Games, be sure to check out the rest of our Roblox code guides to help make life a little easier
What is Undertale Rebuild TD?
“Undertale Rebuild TD” is a unique tower defense game set in the beloved world of Undertale. Players must strategically defend key locations within the Underground from hordes of enemies by strategically placing a variety of defenses and utilizing special abilities. With charming pixel art visuals and familiar characters from Undertale, this game offers a nostalgic and challenging experience for fans of the original game as well as newcomers to the genre. Join the adventure, explore new mechanics, and protect the Underground in “Undertale Rebuild TD”.
There are a number of different factors that affect how far you can yeet your friend, including your running speed, your friend’s weight, and the terrain. You can also upgrade your yeeting power and unlock special pets to help you yeet your friend even further.
If you’re looking for more codes, be sure to check out our Underworld Ream Codes, Toilet Tower Defense Codes, and Peroxide Codes pages! Or have a look at our Roblox corner of the site for even more game codes and updates.
We checked for new codes on July 25, 2025!
Active Undertale Rebuild TD Codes
- 1000Likes: Redeem code for Soul Fragments ×1950 and Determination Extract ×15 (NEW)
- 24hM: 3000 Soul Fragments and 7 Determination Extract (NEW)
- 350KVisits: Redeem code for Soul Fragments ×900, Determination Extract ×2, and New Banner Fragments ×30 (NEW)
- 5000Members: 500 Sf and 3 Dt
- 500KVisits: 1250 Sf , 2 Dt and 30 New Fragments
- 600Actives: Redeem code for Soul Fragments ×1500, Determination Extract ×5, and New Banner Fragments ×150 (NEW)
- AllIn: Freebies (NEW)
- BugsAndFix: 1750 Soul Fragments and 2 Determination Extract (NEW)
- FixAndBugs: Redeem code for Soul Fragments x500 and Determination Extract ×3 (NEW)
- Flirt: Redeem code for Determination Extract × 10 and New Banner Fragments ×50 (NEW)
- GamblingIsReal: Freebies (NEW)
- Index: Redeem code for Soul Fragments ×1000 and Determination Extract ×2 (NEW)
- JudgmentHall: Redeem code for Soul Fragments ×3000 and Determination Extract ×5 (NEW)
- Not1000Actives: 1 Sf and 1 Dt
- Not5000Members: Redeem code for Soul Fragments × 1 and Determination Extract ×1 (NEW)
- OpenTestRound2: Redeem code for Soul Fragments ×3000 and Determination Extract ×3 (NEW)
- WasHere: Redeem code for Soul Fragments ×7500, Determination Extract ×15, The MTT Trio ×1, and WAS HERE ×1 (NEW)
- uttcUpdate: 1250 Soul Fragments, 5 Determination Extract, and 25 New F (NEW)
How to Redeem Undertale Rebuild TD Codes?
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What Do These Codes Do?
Undertale Rebuild TD codes give you free in-game items and bonuses that can help you progress faster. These rewards can include coins, boosters, and even new units. However, keep in mind that these codes can only be redeemed once, so it’s important to claim them when you’re ready to maximize their benefits.
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How to Get More Codes
The best way to find new Undertale Rebuild TD codes is to keep an eye on the official Roblox Undertale Rebuild TD page. The developers often post new codes there, as well as news and updates about the game. You can also check this wiki regularly for updates on the latest codes.
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