Update: added new Undertale Adventures X codes on November 4, 2026
If you love Undertale and tower defense games, this game combines the best of both worlds. Here, you must defend your base against waves of monsters using your team of powerful Undertale characters. So, here is the list of all new Undertale Adventures X codes that grant you free items, boosts, and rerolls to summon new units and make a strong team.
All New Undertale Adventures X Codes
- FREETOKENS: 5x Spooky Goodie Bag, 1500x Jack-O-Lantern (NEW)
- Halloween2026!: 3 Cinnamon Bunnies, 5 ??? 1 Pie, 2 Ketchup, 3 Spider Cider, 2 Face Steak, 2 Glamburger, 3 Sea Tea, 3 Nice Cream, 50 Trait Rerolls, 3 Astronaut Food, 3 Starfait, 1 Legendary Hero, 3Hot Dog, 10 Soul Fragment, 3 Spider Donuts, Jack-O-Tokens, 5 Spooky Goodie Bag, 5 Perfect Soul, 250 Gold, 1,5000 Souls (NEW)
Expired Undertale Adventures X Codes
- ANOMALOUSEVENT2!!!
- ANOMALOUSEVENT!!!
- 9.5KCCU!!!2026
- 8KCCU!
- 5KCCUREWARD
- 6KCCUREWARD
- PREPAREFORHALLOWEEN
- 4KCCU!
- UAXISTHEBESTUTTD
- 3KCCU!
- THANKYOUFORWAITING
- 2KCCU!
- FREESTUFF!
- TRADINGSOON
- MONEYTONIGHT
- 7KCCU!
If you’re looking for more anime-inspired experiences, check out +1 Anime Eyes, Anime Galaxies, Anime Ball Battle, Anime Ball Duels. You can also explore our Roblox game codes master list to discover more games with free rewards.
How to Redeem Undertale Adventures X Codes
Redeeming the codes for Undertale Adventures X is a simple way to gather extra resources and improve your team. So, follow the steps to get the rewards:
- Launch Undertale Adventures X on your Roblox app.
- Click on the Codes icon on the right side of the screen.
- Enter a valid code in the text box on the pop-up window.
- Press the Enter key to receive all your rewards.
How to Get More Undertale Adventures X Codes
The developers of the game may release new codes during major updates and special events. So, make sure that you join the official Undertale Adventures X Discord server and find the new codes alongside the game announcements. You can also join the Side Productions group on Roblox for more in-game rewards.
If finding out the codes in the game is a huge hassle, consider bookmarking this page to keep a check of new rewards. Once the game drops new updates, we make sure to edit the list and add new codes so you don’t miss out on them.
Why Are My Undertale Adventures X Codes Not Working?
If any code fails to redeem, the first thing you should check is whether you entered it correctly. A small typo or incorrect capitalization can prevent the game from accepting the code. You should also verify that the code hasn’t been redeemed previously on the same account. Lastly, you can consider joining a new server to use the codes.
That is all for the list of codes for Undertale Adventures X. So, what is the best unit you have in your team? Tell us in the comments below.
