Mysterious Murderers Working Promo Codes

This page lists promo codes that players still report as working in Mysterious Murderers, the Roblox murder-mystery game from Winng3447 and Granturismo Games (released 15 April 2026). Codes unlock cosmetic weapons, coins, keys, and other inventory items—they do not change core role rules for Murderer, Sheriff, or Innocent players in the 12-player lobbies.

Treat every entry below as community-tracked. Developers can disable a string without announcement, and limited-time events expire quietly. Before you share a code in Discord, redeem it yourself on a live server. If the game rejects it, check Expired Codes and return here after the next update.

Need the menu walkthrough first? Read How to Redeem Codes, then come back to copy rewards from the tables below.

Confirmed active codes

Redeem via Inventory → Enter Code → Redeem. All strings are case-sensitive.

Code	Reward	Notes
OCEAN	Waves Sword	Popular melee cosmetic; verify after major patches
GREEN	Green Heat Sword	Themed knife skin with green heat visual
LAVA	Lava Hammer	Heavy melee cosmetic
BLU3CU4LASS	Blue Cutlass	Uses numbers in place of letters—type exactly
KNIFE	Rainbow Knife	Classic rainbow melee reward
GUN	Rainbow Pistol	Sheriff-flavored sidearm cosmetic
SEER	Seer Axe	Distinct axe model for inventory flex
K3Y	Mystery Key	Utility/key item—confirm in inventory after redeem
SEASON4	2500 Coins	Season 4 currency bundle; high value for shop rolls
BEACH	Rainbow Beach Knife	Beach-themed rainbow knife variant
WAVES	Waves Weapon	Wave-themed weapon cosmetic
FUTURE	Future Laser	Futuristic laser cosmetic

After redeeming, open your loadout and inventory tabs to equip new items. Coin grants from SEASON4 apply to your balance immediately if the server accepts the code.

Codes to verify before sharing

Some strings circulate widely but flip between active and inactive depending on the server region and patch day. Test these yourself and note the date you confirmed them:

Code	Expected reward	Status
FR33C4ROMA	Free Chroma / chroma-related reward	Check in-game—often tied to group milestones; may overlap with the 50k member Free Chroma promotion
PINK2	Pink-themed weapon or cosmetic	Check in-game—success reported unevenly after recent updates
CWAVES	Waves-themed weapon variant	Check in-game—community-tracked; case-sensitive
EGUN	Rainbow / chromatic gun cosmetic	Check in-game—pairs with EKNIFE for flex loadouts; case-sensitive
EKNIFE	Rainbow / chromatic knife cosmetic	Check in-game—community-tracked rainbow melee; case-sensitive
COCEAN	Ocean-themed weapon cosmetic	Check in-game—community-tracked ocean variant; case-sensitive

All verify-table strings must be typed exactly as shown—capitalization matters. EGUN is not egun; EKNIFE is not EKnife.

When FR33C4ROMA fails but other codes work, join the official Granturismo Games Roblox group and look for milestone gifts in Inventory. The 50,000 member Free Chroma reward is a separate path from typed promos but solves a similar player goal—the group now exceeds 557k members, so retroactive claims should still work for new joiners via Milestone Rewards.

How to test a code efficiently

1. Launch Mysterious Murderers on Roblox on a public server (private servers can behave differently after hotfixes).
2. Open Inventory on the left side of the HUD.
3. Tap Enter Code, paste one string, and press Redeem.
4. If successful, screenshot the reward popup and equip the item in a round.
5. If unsuccessful, try a second server before marking the code dead—sometimes authentication hiccups mimic expiry.

Avoid spamming redeem on the same code dozens of times; Roblox may throttle UI actions. One clean attempt per server is enough.

Reward types and what they mean for gameplay

Most code rewards are cosmetics. A Rainbow Knife or Waves Sword changes how your Murderer blade appears but does not override round balance. Rainbow Pistol and Future Laser fit Sheriff loadouts visually. 2500 Coins from SEASON4 is the main outlier—coins feed the in-game shop loop, so redeem currency codes before spending Robux on rolls when possible.

K3Y and similar utility rewards may interact with chests or shop systems introduced in seasonal updates. If a key lands in inventory without an obvious use, check the Updates hub for patch notes describing new vendors or crates.

Cross-checking with expired lists

Players often retry old strings from TikTok compilations. These do not work anymore: ICE, PO1S, IC3, R3D, C0RRUPT, B4NN3D, 2023, E1ECTR0, B4LCKNWH1TE, SH4RKS33K3R, D4RTBR1NG3R, M1DNIGH7, FreeCoins, UPDATEHYPE, and PINK1. Full history lives on Expired Codes.

Keeping active and expired pages separate saves time: you are not re-typing dead promos during a two-minute lobby countdown.

When to revisit this page

Return after:

• Season launch trailers or Season 4-style content drops
• Granturismo social posts announcing “new code”
• Weekly play if you rely on coin codes for shop grinding

The Mysterious Murderers Codes Hub links all three code pages plus guides for roles and maps. New players should pair codes with Getting Started so cosmetics do not distract from learning Sheriff aim or Innocent positioning.

Reporting changes

If a code above fails for you but works for squadmates, note platform (PC, mobile, console) and region. Developers sometimes stage rollouts. Conversely, if you confirm a expiry, cross-reference Expired Codes so the community stops wasting attempts.

Remember: this is not Murder Mystery 2. MM2 codes will never grant items here. For platform differences, see Mysterious Murderers vs Murder Mystery 2.