Untitled Slayer is a Roblox open-world game built around the Demon Slayer universe, where you choose to fight as a Slayer or Demon, master Breathing Styles or Blood Demon Arts, and take on bosses with friends. Codes hand out Unstable Potions for rerolling clans, appearances, and combat styles, plus timed boosts for Yen and drop rates that help you progress without grinding.
Working Untitled Slayer Codes
All codes below are currently active. Redeem them in Untitled Slayer on Roblox before they expire.
!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: !2mvisits expires July 1st and !animationsbugfix expires July 3rd — redeem those first.
How to Redeem Codes in Untitled Slayer
Before redeeming any code, you must be a member of the MBStudio Roblox Community. Codes will not work without group membership.
Tip: If a brand-new code fails to register, exit the game and rejoin. Newly released codes sometimes take a few minutes to propagate across all servers, and a fresh session usually resolves it.
Expired Untitled Slayer Codes
The codes below no longer work and cannot be redeemed.
!update3.3!7klikes!4kfavourites!bugfixes!15klikes— expired May 17th!9kfavourites— expired May 14th!update3.2— expired May 17th!ihavethebestnichirin— expired May 15th!9klikes— expired May 12th!nichirinappbugmybadlol!8kfavourites!7kfavourites!1mvisits!6kfavourites!900kvisits!10klikes— expired May 12th!anticheatfix— expired May 12th!ireadtips
Where New Codes Come From
The developer @MortelCraft does not follow a fixed release schedule, but new codes tend to appear around a few recurring triggers. Major game updates and patch releases are the most reliable source — developers frequently attach codes as a bonus alongside new content. Milestone events, such as the game hitting a new likes or visits count, also prompt code drops, as do community goals and occasional compensation codes after server outages or bug incidents.
To catch codes as soon as they go live, join the Untitled Slayer Discord server where announcements are posted directly. The MBStudio Roblox Community group page is another reliable spot. Bookmark this page and check back regularly — the list is updated whenever new codes are confirmed.
