Working SLAYER Codes

Promo codes are one of the fastest ways to jump-start a new character in SLAYER by kriel. Whether you just finished the tutorial or you are grinding Breathing Styles and Blood Demon Arts on a live [2X EXP] build, redeeming every active code stacks free Yen and experience that would otherwise take missions to earn. This hub lists every working code we track for November 2026, explains exactly how to redeem them in-game, and answers the questions players ask most often after a code fails.

SLAYER is a Demon Slayer-inspired Roblox action RPG (Place ID 134190081223854). The experience is still in public testing and early access, so the developers drop codes around releases, milestones, and community thank-yous. Codes are case-sensitive. Copy them exactly as shown — mixed case like LUNARUPDATE will not work if you type lunarupdate or paste with extra spaces.

If you are brand new, finish character creation and the short tutorial first. The Codes tab unlocks after that onboarding flow. Pair this page with the Getting Started guide so you know where Yen and Exp go once they land in your inventory, then use the Tier List when you are ready to spend resources on stronger styles.

Active codes (November 2026)

Checked against community trackers as of November 9, 2026. Reward text can differ slightly by source; the in-game redeem toast is authoritative.

Code	Rewards
LUNARUPDATE	Yen + Exp (some trackers report ~30K Yen, clan/Breathing/BDA rerolls, ~7.5K Exp — confirm toast)
BOOSTME	15,000 Yen + 10,000 Exp
FIFTYK	50,000 Yen
THANKYOU	2,500 Yen
RELEASE	5,000 Yen + 300 Exp

Redeem every row above before hunting for expired lists on social media. FIFTYK is the largest single Yen dump on the current list and is especially useful for early forging and shop purchases. BOOSTME and LUNARUPDATE lean into experience so you can clear Final Selection-style gates and mission ranks faster while public testing still runs event titles such as [2X EXP] on the experience page.

We refresh this table when the community Discord or Trello announces new strings. Bookmark the Links Hub for official Discord and Trello shortcuts, and check Updates after major patches — code waves often land alongside balance passes on Breathing Styles (BS) and Blood Demon Arts (BDA).

Video guide

How to redeem codes

1. Join SLAYER on Roblox and load into a live server.
2. Complete character creation and the tutorial if you have not already. The Codes UI stays locked until that onboarding finishes.
3. Press M to open the main menu.
4. Open the Codes tab.
5. Paste a code exactly as listed (case-sensitive, no trailing spaces).
6. Press Redeem and confirm the Yen or Exp toast before moving to the next code.

Redeem one code at a time. If a string fails, re-check capitalization, leave the server, rejoin, and try again before assuming it expired. After a successful redeem, spend Yen intentionally — early impulse buys can lock you into weak loadouts. Cross-check priorities in the Guides Hub and the Tier List before dumping fifty thousand Yen into a style you will replace a day later.

Why codes matter during public testing

Public testing builds change quickly. Mission rewards, forge costs, and clan progression can shift between patches, so free Yen from codes softens the impact of balance tweaks. Experience codes matter even more when the place title shows [2X EXP] or similar event suffixes: stacking code Exp on top of a double-experience window compresses the early grind into a single session.

Codes also help alt characters. If you want to try both Slayer and Demon faction paths, redeeming the full list on each fresh account reduces the friction of replaying the tutorial economy. Just remember that most promo codes are one redeem per account — you cannot farm the same string repeatedly on one Roblox user.

Players who automate missions sometimes ask whether codes still matter if they use tools from the Scripts Hub. They do. Scripts do not replace one-time Yen grants, and relying only on automation without claiming FIFTYK or BOOSTME simply leaves free currency on the table. Use codes first, then decide whether farming tools fit your risk tolerance.

Expired and invalid codes

Any code not in the table above should be treated as expired or unverified until we add it here. Random strings from old screenshots, TikTok comments, or unrelated Demon Slayer experiences will not work in kriel’s SLAYER. Do not spam the redeem box with guesses — repeated failures can make it harder to tell when a real code is mistyped.

When a code rotates out, we remove it from the active table rather than keeping a long graveyard that confuses new players. For historical patch context, read Updates. For official announcements that often include the first look at a new code, use the Discord and Trello links on the Links Hub.

Tips for maximizing rewards

• Redeem on a character that already finished the tutorial so nothing sits unclaimed behind a locked menu.
• Prefer spending large Yen drops after you understand forge and shop priorities from Getting Started.
• During [2X EXP] title events, redeem Exp-heavy codes early in the session, then run missions while the multiplier is active.
• Keep this page open on a second monitor or phone so you can paste without retyping mixed-case strings.
• After redeeming, skim Updates in case a fresh patch changed what Yen buys or how Exp applies to Breathing Styles and Blood Demon Arts.

Related wiki pages

Codes are only one lever. New players should continue through Getting Started, compare styles on the Tier List, and keep official Discord and Trello bookmarked via the Links Hub. If you research automation, read the safety notes on the Scripts Hub before running anything. Mission and progression write-ups live under the Guides Hub, and patch timelines sit on Updates.

Stay skeptical of third-party sites that demand password logins or paid “code generators.” Official redemptions happen only inside the Roblox experience through the M menu Codes tab. This wiki never asks for your Roblox password.

Keeping this list accurate

We align code text with community reports from the official Discord and developer notes on Trello. If a code suddenly stops working for everyone, we pull it from the active table even if social clips still show the old string. If you redeem successfully and want to double-check rewards against another source, compare with in-game toasts first — the client message is the source of truth for what your account received.

Public testing means reward values can be adjusted in follow-up hotfixes. A code that once granted a flat Yen amount might be replaced by a new string rather than silently changed. Always paste the current table entry rather than memorizing last month’s list.

When the experience ships larger content drops — new clans, Nichirin forging steps, or expanded Final Selection content — expect another thank-you or release-style code. Check back here after those launches, and use Updates to see what the patch actually changed so your Yen spending matches the new meta described on the Tier List.