Black Grimoire Codes (October 2026): Yules, Juice and Mastery Rewards

Black Grimoire codes for October 2026 can help you pick up Yules, a Moguro Leaf Juice item, and a short mastery boost. Start with the three codes below, and copy each one exactly as written. Codes can be disabled without notice, and an account that has already redeemed a code may not be able to claim it again.

Updated October 13, 2026. This guide focuses on the Black Grimoire RPG by NikkiDZN, not Black Grimoire: Odyssey or another similarly named Roblox experience. That distinction matters: a code written for one experience may not be recognized in the other.

Black Grimoire codes for October 2026

Enter the capitalization shown in the table. The game, rather than a webpage, decides whether a code can still be redeemed. A successful claim may also depend on whether the code has been used on your account before.

Which Black Grimoire code should you redeem first?

If your priority is currency, choose ULTAMAYT when you have time to make use of its temporary multiplier. The 500,000-Yule reward is separate from the time-limited boost, so do not confuse the initial currency award with an indefinitely active multiplier. For mastery progression, GUIZERAYT is better used immediately before a planned training session. JUICE is an item reward rather than a currency or experience boost.

There is no need to enter multiple variations of the same code. Avoid guessing punctuation or adding spaces: even a small typo can turn a valid string into an invalid one.

How to redeem codes in Black Grimoire

1. Open the Black Grimoire experience created by NikkiDZN on Roblox. Make sure you have not opened the separately titled Odyssey game.
2. Load into a server and wait for the normal game interface.
3. Press M on a keyboard or select the on-screen Menu control.
4. Find the text field labeled INSERT CODES.
5. Paste a code from the table without adding a space at the beginning or end.
6. Press Enter to submit it, then read the game’s response before trying another code.

If the redemption box does not appear, check that you are inside the correct game and that its interface has finished loading. Menu controls can change after game updates. The creator also maintains an official Roblox community, which some redemption instructions require players to join before claiming codes. Use the community linked from the game’s own page rather than an unsolicited off-site link.

Why your Black Grimoire code may not work

The code was already redeemed

Most promotional redemptions are limited to one successful use per account. If you claimed a reward previously, retrying the same string may not give you a second copy.

The code has expired or been disabled

Promotional codes can stop working without a public countdown. The absence of a published expiration date is not proof that the offer lasts forever. If the game explicitly rejects a carefully copied code, do not assume the server is broken.

You entered the wrong game or missed a prerequisite

Black Grimoire and Black Grimoire: Odyssey are separate experiences. Verify the game title and creator before troubleshooting. If you receive a permissions or community-related error, open the creator’s community from the official Roblox experience page and review any current joining requirements.

Capitalization, spaces, or connection problems

Copy the code directly rather than retyping it, especially for names with mixed letters. Remove leading or trailing whitespace, and reconnect if the game’s interface has failed to load. Repeated submissions will not repair an expired code.

Where to look for new Black Grimoire codes

Begin with the developer’s notices inside the game and the official creator community linked from the Roblox experience page. Game updates, milestone celebrations, and community announcements are the most relevant places to watch, but an update does not automatically mean that a fresh redeem code exists. Always check the exact game name before using a string shared in a social post.

It is useful to bookmark this guide for redemption instructions. For other Roblox reward systems, AVARIXO also has a Blox Fruits codes guide, a King Legacy codes guide, and a Ro-Ghoul codes guide. Those games use their own code lists: a code from one game cannot be assumed to work in another.

Black Grimoire codes FAQ

Are Black Grimoire and Black Grimoire: Odyssey codes interchangeable?

No. The titles identify different Roblox experiences, and one game’s promotional strings should not be treated as universal codes.

Do I need to join a Roblox community to redeem codes?

Some redemption instructions for Black Grimoire require membership in the creator’s official community. If a code is refused, review the current game instructions and the community link shown on the game’s Roblox page.

Does a code give free Robux?

The codes in this guide concern Black Grimoire in-game rewards, such as Yules, an item, or a temporary boost. They are not Roblox gift-card or Robux redemption codes. Avoid websites promising free Robux in exchange for an account password.

Can I use a mastery boost later?

A time-limited boost is best claimed when you can play, because it may begin immediately after redemption. Check your in-game timer instead of assuming it can be stored for another day.

Why is a code missing from this list?

Older promotional strings may be disabled, associated with seasonal events, or contradictory across dated lists. A shorter carefully checked table is more useful than copying every code ever mentioned for this game.