Underpass
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Underpass
[🎉RELEASE🎉] Undertale Adventures X Prestige
Focused Prestige player page with practical routes, resources, and decisions for the selected game.
![[🎉RELEASE🎉] Undertale Adventures X Prestige](/media/optimized/31c70b2b0fef6f7165c6d048-498.webp)
The Underpass is the wave-XP reward track shown with the Waterfall update and still named by the Supporter pass.
FAQ
[🎉RELEASE🎉] Undertale Adventures X Prestige FAQ
What is Undertale Adventures X?
It is a free Roblox tower defense experience by Side Productions. You defend a base with Undertale-inspired units, level those units, and strengthen them with traits. The experience was created on July 16, 2024, and the public record was updated on October 12, 2026.
Is Undertale Adventures X free?
The Roblox listing has no paid entry price. Optional Robux gamepasses exist. Known names include VIP, SHINY Hunter!, Supporter, +50% Tokens, and 2x XP. Current Robux prices were not on the public listing text used here.
Who makes the game?
Side Productions, the verified Roblox community that owns the experience. The community page is linked from the game listing.
How do codes work?
Open the Codes button on the right side of the screen, enter the full string, and press Enter or Redeem. Only 2KCCU! and FREESTUFF! were still reported working in October 2026, and both rewards were described only as freebies.
Do trait rates still match the old table?
Trait rerolls assign one of 12 listed traits. The rate table matches an August 2024 odds screen for Royal Guard Soul at 15%, and a November 29, 2024 video described the Perseverance buff the table now shows. Read the percent in your own Traits menu before you spend a large stack of rerolls.