Untitled Slayer is a Roblox anime-combat experience where codes hand you reroll potions for your clan, breathing style, appearance, and Nichirin blade, plus temporary drop and yen boosts that speed up your grind.
Working Untitled Slayer Codes
Here’s every code that’s currently redeemable, along with exactly what you get for typing it in.
!summerevent2026
15 Unstable Clan Reroll Potions, 3 Unstable BDA Potions, 1 Breathing Reset Potion, 10 Appearance Reroll Potions, 3 Nichirin Appearance Reroll Potions, and 3 Unstable Nichirin Color Reroll Potions
New
!summerboost2026
2x Drop Boost (1 Hour) and 2x Yen Boost (1 Hour)
New
!animationsbugfix
2 Unstable Clan Reroll Potions
New
!2mvisits
1 Unstable Breathing Reset Potion, 3 Unstable BDA Reroll Potions, and 10 Unstable Clan Reroll Potions
New
!20klikes
10 Unstable Appearance Reroll Potions, 5 Unstable Nichirin Appearance Reroll Potions, and 5 Unstable Nichirin Color Reroll Potions
New
!1.5mvisits
1 Unstable Race Reset Potion, 1 Unstable Breathing Reset Potion, 3 Unstable BDA Reroll Potions, and 3 Unstable Clan Reroll Potions
!10kfavourites
5 Unstable Clan Reroll Potions and 5 Unstable Appearance Reroll Potions
!700kvisits
5 Unstable Nichirin Color Reroll Potions and 5 Unstable Nichirin Appearance Reroll Potions
!800kvisits
5 Unstable Haori Reroll Potions and 5 Unstable Demonic Reroll Potions
!ifeelgood
10 Unstable BDA Reroll Potions
!hideinthemist
1 Unstable Breathing Reset Potion
!update3
15 Unstable Clan Reroll Potions, 1 Unstable Race Reset Potion, and 10 Unstable Appearance Reroll Potions
!timetofarm
2x Drop Rate Boost (2 Hours) and 2x Yen Boost (2 Hours)
ireadtips
1 Unstable Clan Reroll Potion
Note: several of these potions and boosts are labeled “Unstable,” which means their effect includes some randomness when you use them. That’s how the game itself packages these rewards, so don’t be surprised if two players get slightly different outcomes from the same potion.
How to redeem codes in Untitled Slayer
Before you type in a single code, make sure you’ve joined the MBStudio Roblox community. Codes simply won’t register if you’re not a member of that group, so it’s worth checking your membership first.
Tip: if a fresh code refuses to work, leave the game and rejoin. New codes sometimes need a few minutes to spread across every server, and a clean reload usually clears it up.
Expired Untitled Slayer codes
These no longer work, so don’t waste time typing them in.
!update3.3
!7klikes
!4kfavourites
!bugfixes
!15klikes
Expired May 17
!9kfavourites
Expired May 14
!update3.2
Expired May 17
!ihavethebestnichirin
Expired May 15
!9klikes
Expired May 12
!nichirinappbugmybadlol
!8kfavourites
!7kfavourites
!1mvisits
!6kfavourites
!900kvisits
!10klikes
Expired May 12
!anticheatfix
Expired May 12
!ireadtips
How to get more Untitled Slayer codes
New codes usually go out to celebrate visit milestones, like counts, favorite counts, or content updates, so keep an eye on the game’s progress toward its next round number. The developers post fresh codes through their official Roblox community and their Discord server, which are the most reliable places to catch a new code the moment it drops.
Joining the MBStudio Roblox community does double duty. It’s a requirement for redeeming any code at all, and it also puts you in front of the same announcements the developers share with their most active players.
Why didn’t my code work?
The most common reason is a typo, since codes need to match exactly, including capitalization and punctuation like the exclamation mark. The second most common reason is not being in the MBStudio group, since the game blocks redemption entirely without that membership.
Are these codes free?
Yes, every code listed here is free to redeem through the in-game settings menu, and none of them require any purchase.
Keep this page handy and check back whenever you hear about a new milestone or update, since that’s usually when Untitled Slayer’s next batch of codes lands.
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