Working Grimy Undergrounds Codes
Last updated August 21, 2026
No working codes right now
We're tracking Grimy Undergrounds 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 Grimy Undergrounds
- Launch Grimy Undergrounds 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 Grimy Undergrounds
You earn your KOs day by day and save up for better swords. This game is for sword fighting lovers! If you want your score to be reset then ask peaspod to come into your server and do it for you. He might not come on the 1st time you ask because he gets lots of messages but just keep asking. :D