Undertale Adventures X codes

Undertale Adventures X codes will help you claim free Rerolls, which you can use to power up your Units in the Roblox tower defense game. The experience is based on Undertale, which is inspired by Nintendo's EarthBound franchise. In Undertale Adventures X, players can Summon auto-battling Units from Deltrarune's series like Flowey, Papyrus and Sans, and then use them to defend their base from waves of enemies.

Each stage is based on an area from Undertale, including Ruins, Snowdin and Waterfall. If you're struggling to clear a level, you can always redeem codes for Undertale Adventures X to get rewards like free Trait Rerolls, which you can use to power up your Units. Codes are usually shared in the game's official Discord server, but to save you time we've rounded up the latest codes below.

On this page:

• Working codes
• How to redeem
• Expired codes

To see this content please enable targeting cookies.

All working Undertale Adventures X codes

Here are all of the working codes we've found as of 18th October 2026:

• 5KCCUREWARD - 5 Glamburgers, 50 Trait Rerolls, 15 ???, 1 Temmie Flakes, 5 Face Steaks, 1 Butterscotch Pie, 1 Abandoned Quiche, 5 Ketchup, 1 Legendary Hero, 5 Stairfait, 5,555 Souls NEW
• 6KCCUREWARD - 5 Glamburgers, 50 Trait Rerolls, 15 ???, 1 Temmie Flakes, 5 Face Steaks, 1 Butterscotch Pie, 1 Abandoned Quiche, 5 Ketchup, 1 Legendary Hero, 5 Stairfait, 5,555 Souls NEW
• PREPAREFORHALLOWEEN - 10 Temmie Flakes III, 25 Soul Fragments, 1 Bravery Vial, 5 ???, 1 Temmie Flakes IV, 10 Perfect Soul, 1,023 Souls, 1,023 Gold NEW
• MOREFREESTUFF - Rewards

How to redeem codes in Undertale Adventures X

Redeeming codes in Undertale Adventures X is really straightforward. Here's a step-by-step guide:

1. Launch Undertale Adventures X in Roblox.
2. Select the 'Codes' button on the right of your screen.
3. Type a code into the text box and then press the Enter key.

All expired Undertale Adventures X codes

• 4KCCU!
• UAXISTHEBESTUTTD
• 3KCCU!
• THANKYOUFORWAITING
• 2KCCU!
• FREESTUFF!
• TRADINGSOON!
• MONEYTONIGHT

That wraps up our guide on Undertale Adventures X codes. If you need help with other Roblox games, make sure you check out our pages on Anime Zero codes, Ball VS Ball codes, Morioh High codes, Karinderya codes, and Anime Ball Duels codes.