Murder Mystery 2 (MM2) continues to be one of the most popular Roblox titles, and codes are always a hot topic among players. Redeeming them is an easy way to grab exclusive knives and cosmetics that set you apart in lobbies. Below, I've gathered and reviewed the currently active codes for October 2025, along with some practical notes on what to expect.

Here are the confirmed codes you can use right now:
| Code | Rewards | Status |
|---|---|---|
| SUB0 | Sub Knife | Active |
| SK3TCH | Sketchy Knife | Active |
| D3NIS | Denis Knife | Active |
| C0RL | Corl Knife | Active |
| FL4M | Flamingo Knife | Active |
These knives don't give gameplay advantages, but they carry a lot of community history. Many players like collecting them for their designs and as a way to show they've been around the game for a while.
If you're aiming to expand your collection without breaking the bank, the smartest approach is to combine these free code rewards with trades or purchases of cheap Murder Mystery 2 weapons . Many players are willing to part with older knives or guns at low value, especially if you already have a recognizable code knife to sweeten the deal. This way, you can steadily grow a unique inventory without needing rare leaderboard exclusives.
If a code doesn't work, it's usually expired or already redeemed on your account.
While these items don't affect competitive balance, they're valuable for collectors and traders. Knives like Flamingo and Denis are often recognized in trades, and owning them can spark quick deals with other players who missed the original release. Even if you're not a trader, it's satisfying to build a full set of themed knives for your collection.
For October 2025, the active Murder Mystery 2 codes are SUB0, SK3TCH, D3NIS, C0RL, and FL4M, each unlocking a unique knife. They don't change gameplay but are prized for collection, trading, and showing off in lobbies. Players should redeem them soon before they rotate out, as MM2 codes often have uncertain expiration windows.