Last updated on 26 October 2026 · Game last updated by the developer: 21 October 2026
Murder Mystery 2 has run the same round for over a decade: one player is the murderer, one is the sheriff, and everyone else has to work out which is which before they are eliminated.
Codes here pay knives and pets rather than currency, and several of them have been live for years. This page lists every Murder Mystery 2 code that currently works and the item each one unlocks.
All Working MM2 Codes
- FL4M: Flamingo Knife
Redeem it in the in-game codes menu before it gets pulled, since Murder Mystery 2 codes tend to disappear without warning.
Expired MM2 Codes
- F1RSTC0D3: Gifted knife, the only uncommon one
- HW2017: Pumpkin pet, the only pet
- 2015: 2015 knife
- AL3X: Alex knife
- COMB4T2: Combat II knife
- C0RL: Corl knife
- D3NIS: Denis knife
- G003Y: Goo knife
- INF3CT3D: Infected knife
- N3ON: Neon knife
- PATR1CK: Patrick knife
- PR1SM: Prism knife
- R3PT1L3: Reptile knife
- SK3TCH: Sketchy knife
- B4CK2SK00L: Skool knife
- SUB0: Sub knife
- N3XTL3V3L: TNL knife
Seventeen codes, sixteen knives and one pet, and not one still redeems. They are listed with their items because that is the part worth knowing: each knife is still in the trading economy, and the code behind it explains the scarcity.
How to Redeem MM2 Codes
- Open Murder Mystery 2 on Roblox and wait until you are in a lobby rather than a round.
- Click the Inventory button on the left side of the screen.
- Find the code box inside the inventory panel and type the code into it.
- Press Redeem to claim whatever the code holds.
Those steps are worth knowing because the panel is where any future code would go, but nothing has been issued into it for years, so nothing will be accepted.
The Stories Behind the Dead Knives
Five of the retired knives are named after members of The Pals, the Roblox YouTube group whose videos drove much of the game early on. They went out through those channels rather than through the game, which is why they read like a list of usernames.
One is named after a Twitch series Roblox staff ran between 2014 and 2016. Another ran for a single Halloween and is still the only pet the game has given away through a code.
The one genuine rarity is the uncommon knife at the top of the list. Every other code item is common, which makes it the only code reward sitting above that tier, and it is priced accordingly whenever one is traded.
What Is Murder Mystery 2?
Murder Mystery 2 is the murder and deduction game that has sat near the top of Roblox for over a decade: one player is the murderer, one is the sheriff, and everybody else has to work out which is which before they are eliminated.
It is made by Nikilis and opened on 18 January 2014. As of 6 October 2026 it had 31 billion visits and 24.3 million favorites, with roughly 87.9 thousand people in a round at once, numbers almost nothing else on the platform can match.
Where to Find New MM2 Codes
Codes are handed out through the developer’s own social accounts, not in the game, and the Roblox description says as much: follow and subscribe for free knife codes. There is no feed inside the game that will tell you, which leaves the Murder Mystery 2 Discord server as the closest thing to an announcement channel.
In practice the knives now move by trading. Every item on the retired list is still tradeable, so the realistic route to any of them is the trading system, not a code box.
For more of the same, see our Murder Duels codes and DOORS codes.
Frequently Asked Questions
Are there any working MM2 codes right now?
The list at the top of this page is the live answer, and MM2 has not had a working code for years. Any page showing one is carrying a code that was switched off long ago.
Can I still get the knives the codes gave?
Yes, through trading. Every code item is tradeable and still in circulation, the only remaining route now that the codes are dead.
Where do I enter MM2 codes?
In the Inventory panel, reached from the button on the left of the screen. There is nothing to type into it at the moment, since no code has been issued for years.
Did any MM2 code ever give a pet?
One did, released for Halloween in 2017. It is the only pet the game has ever given away through a code, and every other code reward was a knife.
More Roblox Codes
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