Codes are a small rewarding feature in Murder Mystery 2, similar to Promos, that allow players to enter a small portion of writing in their inventory and upon doing so, the player may receive a reward such as a knife, gun, or even a pet. Codes are mostly always given away at Nikilis's twitter page. Codes can also be given away at JD's YouTube channel.
Working Codes
There are no working codes right now.
Past Codes (Discontinued)
| Promotion Weapons | ||||
|---|---|---|---|---|
| Name | Type | Type | Code | Image |
| Gifted | Uncommon | Knife | F1RSTC0D3 | 
|
| Reptile | Common | Knife | R3PT1L3 | 
|
| 2015 | Common | Knife | 2015 | 
|
| Patrick | Common | Knife | PATR1CK | 
|
| Skool | Common | Knife | B4CK2SK00L | 
|
| Goo | Common | Knife | G003Y | 
|
| TNL | Common | Knife | N3XTL3V3L | 
|
| Neon | Common | Knife | N3ON | 
|
| Infected | Common | Knife | INF3CT3D | 
|
| Prism | Common | Knife | PR1SM | 
|
| Alex | Common | Knife | AL3X | 
|
| Corl | Common | Knife | C0RL | 
|
| Denis | Common | Knife | D3NIS | 
|
| Sketchy | Common | Knife | SK3TCH | 
|
| Sub | Common | Knife | SUB0 | 
|
| Pumpkin (2017) | Common | Pet | HW2017 | 
|
| Combat II | Common | Knife | COMB4T2 | 
|
Trivia
- Pumpkin (2017) is the only pet that was originally obtainable by redeeming a code.
- TNL is based off the Twitch stream series ran by several ROBLOX employees known as "The Next Level". The Twitch series ran from 2014 to 2016.
- Skool’s code came out around when students were going back to school. Users could redeem this for a period of time, before the code expired.
- Combat II is the first and only Season 1 code.
- The reason on why Combat II was released is due to multiple users demanding Nikilis to make a new code knife to the game.
- Alex, Corl, Denis, Sketchy and Sub’sdesign are based off from the members of the popular ROBLOX youtuber group known as The Pals.
- Gifted and Reptile are the first code knives to be added into the game.
- Gifted is the only item obtained by a code that is uncommon.