Undertale Adventures X Overview
Section links for Undertale Adventures X start at /games/undertale-adventures-x/.
Undertale Adventures X is a Roblox tower defense experience created by Side Productions. First published on Jul 16, 2024 and last updated on Oct 24, 2026, the game has logged 20,687,658 total visits and 6,336 concurrent players as of our Oct 24, 2026 snapshot.
| Official Roblox title | Undertale Adventures X |
|---|---|
| Developer | Side Productions |
| Genres | Tower Defense |
| Released on Roblox | Jul 16, 2024 |
| Last updated | Oct 24, 2026 |
| Concurrent players | 6,336 (snapshot Oct 24, 2026) |
| Lifetime visits | 20,687,658 |
| Roblox Place ID | 18512318831 · Group ID 34323581 |
| Codes status | 4 active, 18 expired (checked Oct 24, 2026) |
Side Productions lists the live title as [🎃HALLOWEEN🎃] Undertale Adventures X, place 18512318831, universe 6272727021, group 34323581. This page uses Undertale Adventures X. Guides also call it Undertale Adventures TD and UAX. It is a tower defense game based on Undertale. You defend a base with Undertale units. Roblox files it as Strategy and Tower Defense. The October 24, 2026 description says a Halloween update is live and does not print a code string. The experience record dates to July 16, 2024.
FREETOKENS and HALLOWEEN2026! stay in Verifying and do not get a copy-as-working button. MrGuider and undertaleadventuresx.wiki list FREETOKENS for 5 Spooky Goodie Bag and 1,500 Jack-O-Tokens. Our verification check notes that those two lists are the only ones among the checked majors. HALLOWEEN2026! is the MrGuider string. The wiki prints Halloween2026!. Our verification check treats that a case conflict with single-tier sources, so neither casing is published as active. UrGameTips on October 22, 2026 is cited on the active cards. Our verification check notes that that page is partially stale on expired strings, so the expired set comes from GamesRadar, Eurogamer, and the wiki. Older Pro Game Guides and Destructoid tower-defense pages from 2025 are not used as sources. 2KCCU!, FREESTUFF!, TRADINGSOON!, MONEYTONIGHT, THANKYOUFORWAITING, 3KCCU!, 4KCCU!, UAXISTHEBESTUTTD, UPDSEP25!, XMASUPDATE2025, HOTLANDS2025, JUNE10UPDATE, UPDATEJUNE10, THANKYOU10kMEMBERS, THANKYOU12MILLIONVISITS, SORRYAFTERTALEDELAY, WELOVEUAPLAYERS, and WINTER2025 are expired. Click the Codes button on the right side of the lobby, paste the string, and press Enter. The October 24, 2026 snapshot showed 6,336 players, 20,687,658 visits, and 44,015 favorites. Side Productions updated the experience on October 24, 2026.
Undertale Adventures X codes & redeem guide
We currently track 4 working codes and 18 expired codes for Undertale Adventures X, last verified on Oct 24, 2026. Codes button on the right of the lobby, then Enter.
5KCCUREWARD: 50x Trait Rerolls, 15x Gaster Hands, 5x Glamburger, 1x Temmie Flakes V, 5x Face Steak, 1x Butterscotch Pie, 1x Abandoned Quiche, 5x Ketchup, 1x Legendary Hero, 5x Starfait, 5,555 Souls (added Oct 24, 2026)6KCCUREWARD: 50x Trait Rerolls, 15x Gaster Hands, 5x Glamburger, 1x Temmie Flakes V, 5x Face Steak, 1x Butterscotch Pie, 1x Abandoned Quiche, 5x Ketchup, 1x Legendary Hero, 5x Starfait, 5,555 Souls (added Oct 24, 2026)MOREFREESTUFF: 25x Trait Rerolls, 3 Gaster Hands, 1,000 Souls (added Oct 24, 2026)
