Undertale Adventures X codes: Halloween reports and source caveats

Undertale Adventures X codes PREPAREFORHALLOWEEN, 5KCCUREWARD, 6KCCUREWARD and MOREFREESTUFF appear in GamesRadar+’s live list checked October 20, 2026. Its table has four entries, while a nearby sentence still says only one code is valid. We preserve that inconsistency instead of claiming four independently confirmed successes.

This is a third-party reported list for Side Productions’ Roblox experience, not an official code announcement or a GameRadar in-game test. GameRadar and GamesRadar+ are separate sites. We cite that publication as a source and do not adopt its first-person testing claims as our own.

GamesRadar+ reports MOREFREESTUFF for 25 Trait Rerolls, three Gaster Hands and 1,000 Souls. Its newer table entries describe larger Halloween and milestone packages. The list here gives selected reported contents and directs you to the source for the complete package, rather than pretending an incomplete summary is an exact inventory receipt.

PREPAREFORHALLOWEEN is reported to include Soul Fragments, Gaster Hands, Souls, Gold and other consumables. Both CCU reward strings are reported to include Trait Rerolls, Gaster Hands, Souls and additional consumables. We do not infer an expiry time from the Halloween name, or assume that two similarly described promotions must redeem together on every account.

Before spending anything, inspect what the game actually adds. A named reward in a tracker is not evidence for its best use, a guaranteed unit or a specific chance of obtaining a stronger trait.

The official Roblox page identifies Side Productions and describes an Undertale-themed tower-defense game. Start from that page, rather than a similarly named Undertale experience. The public developer description does not itself list the code strings above.

GamesRadar+ describes a Codes control on the right side of the main lobby and entering the string in its box. Use the confirmation method shown by your device’s current interface; the publication describes different keyboard, controller and mobile interactions. We have not verified those controls on every device.

Try one string at a time and note the exact result. If a code fails, check spelling, the experience and whether the account has already used it. A stale count in the source is a reason to check the live response carefully. It is not proof that a particular string must work or must have expired.

The developer describes placing Undertale units, leveling them and using traits. That supports a general preparation plan, but does not establish a complete current roster or a reliable tier ranking. We do not invent an optimal team from character popularity.

Our recommendation is to identify what stopped your last defense before using limited progression resources. Observe whether the problem was coverage, a wave you did not understand or a purchase made too early. Try one change and compare the next attempt. That is a learning method, not a verified chapter-clear recipe.

Keep a record of the source date and your own redemption outcomes separately. A report can be accurate when published and become stale later; your account may also have claimed something already. For more examples of how we handle conflicting code reports, see First Person Boxing. For strings currently visible in a creator’s own description, see Mitosis. None of those codes transfers into Undertale Adventures X.