Undertale Mania RPG Codes

All current and previous game codes for Undertale Mania RPG on Roblox.

Last checked for codes:20 hours agoat Times shown in UTC
Checked byNicole LuceroCode Guardiansince 2026
Game thumbnail for Undertale Mania RPG5 active1 expired
How to Claim CodesStep-by-step guide
Case Sensitive CodesType them exactly as shown
CodeDescriptionStatusWorks
3000LIKES!
This code credits your account with 3,000 Monster Dusts, 5 Raid Tickets, and 1 Empty Soul.Active
SRYIFORGOTMONSTERDUST
This code credits your account with 2,500 Monster Dusts.Active
NEW
This code credits your account with 50 Monster Dusts.Active
SORRYCUZIFORGOTMONSTERCORE
This code credits your account with Rewards.Active
2000LIKES!
This code credits your account with rewards.Check
2250LIKES!
This code credits your account with 1,250 Monster Dusts.Expired

How to claim codes in Undertale Mania RPG

First, click the gift icon on the bottom-right corner of the screen:

The gift icon in Undertale Mania RPG

Then, paste the code into the Enter code here! box and click the Redeem button:

The Enter code here! box and Redeem button in Undertale Mania RPG

Nicole Lucero

Undertale Mania RPG Code Guardian

Nicole Lucero

Code Guardian

Personally finds and maintains every code on this page, with around-the-clock help from the rest of our Code Guardians.

Roblox Den's code tracker continually scans Roblox.com, social channels, user reports, game developer networks and other sources, and we've had 730,661 reports from players on Works, Doesn't work and new codes. But before any code is listed on our site, or marked as Expired, our Code Guardians check in-game that it works and that its rewards and requirements are right. That's why every code you try on Roblox Den works.

  1. Checks every code in-game

    Nicole tests every new Undertale Mania RPG code in-game, and re-checks any code that enough players report as not working.

  2. Keeps this page up to date

    When Undertale Mania RPG changes how codes are claimed, adds a new requirement or launches a new promotion, Nicole makes sure it's covered here first.

  3. Lists exact rewards and requirements

    Every code shows exactly what it gives and any level or gamepass it needs, so you know what you're getting before you redeem it.

Nicole isn't the only Code Guardian around here: Erwin and Renato check new codes for this game whenever Nicole is away or asleep.

Meet the rest of the team

About Undertale Mania RPG

Welcome to Undertale Mania RPG, an adventure where you dive into a world of challenging boss battles and continuous progression. In this game, your main goal is to defeat powerful bosses, earning valuable drops like weapons, armors, and souls to enhance your character's strength. Engage in various quests to further your journey and uncover new challenges.

A unique feature of the game is the ability to reset your progress once you reach level 100. This reset isn't a setback; instead, it unlocks an array of new content, including more powerful weapons, stronger armors, formidable bosses, and unexplored maps. Each reset also grants you a permanent increase of +10 to your maximum level, encouraging endless progression and discovery.