Working Undertale RNG Codes
Last updated August 21, 2026
No working codes right now
We're tracking Undertale RNG and will list codes here the moment the developers release them. If you spot one first, send it our way below.
How to redeem codes in Undertale RNG
- Launch Undertale RNG on Roblox.
- Look for a Codes, Shop or settings button — usually on the side of the screen.
- Paste the code exactly as shown above. Codes are case-sensitive.
- Press redeem to claim your reward.
Codes expire without warning — if one fails, it was almost certainly pulled by the developer.
Found a code we're missing?
Submit it and we'll verify it before it goes live.
About Undertale RNG
A Undertale & Deltarune RNG based game! The spookiest game of them all!~ Custom auras, Abilities, Missions, Crafting, Gear, And more!!! We have PVE, obbies and more! Tons of fun to be had for anyone!| You can find these PVE fights in snowdin, castletown and more! Currently there are 100+ auras in the game and more to come! Try to find them all! Join the group for a cool chat title! Also recommended to play on max graphics Please join our community for update announcements! Key binds: V [Use Ability] B [Spawn Niko ball (GamePass)] Credits: [Owner, Programmer, VFX, UI]: NikoBoi (Niko) [Co-owner, Map builder, 3D Modeler, Animator, VFX, Cutscenes Designer, Scripter]: supermasterg1 (Chaos) [Programmer, UI]: MaxieNoob (Mr. Noob) hi [UGC Modeler]: eric8479 (Lua) [VFX]: Evergreen883, progamers123131, noellzies