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Knife Duels runs on Coins, and Coins unlock Cases, and Cases are how you get the rarest Knives in the game. Four active codes are live right now in Roblox Knife Duels, each dropping 3,000 Coins for free. That's enough to open multiple Cases without grinding a single match. There is one catch: your avatar needs to be at least level 10 before the redemption system will accept any code.
All four codes below are confirmed working as of August 10, 2026. Each one awards 3,000 Coins.
| Code | Reward | Status |
|---|---|---|
| DYNAMIC | 3,000 Coins | Active |
| BUTTERFLY | 3,000 Coins | Active |
| LOADING | 3,000 Coins | Active |
| Summer | 3,000 Coins | Active |
With all four codes redeemed, you walk away with 12,000 Coins total. That covers 12 Butterfly Cases at 1,000 Coins each, or a mix of Butterfly and Summer Cases depending on what you're chasing.
Knife Duels code redemption box
Knife Duels skips the standard codes button that most Roblox games put in their menus. Instead, the redemption point is a physical object in the lobby itself.
Repeat for each code individually. You cannot stack them in a single entry.
Two Cases are currently available in Knife Duels, and they pull from completely different loot pools.
The default Case in Knife Duels. Here's the full drop rate breakdown:
| Knife | Drop Rate |
|---|---|
| Arctic Kukri | 23% |
| Hypergreen Skeleton | 23% |
| Trance Karambit | 23% |
| Cobalt M9 Bayonet | 8.8% |
| Redline Butterfly | 8.8% |
| Urban Skeleton | 8.8% |
| Cosmic Karambit | 5.1% |
| Case Hardened Kukri | 0.31% |
| Iridescent Butterfly | 0.31% |
| ??? Special Knife | 0.01% |
The three common drops at 23% each mean you'll see Arctic Kukri, Hypergreen Skeleton, and Trance Karambit most often. The Iridescent Butterfly and Case Hardened Kukri sit at 0.31%, and the mystery Special Knife is effectively a jackpot at 0.01%.
Butterfly Case drop rates
The seasonal option costs 300 more Coins but has a different pool with some summer-themed exclusives.
| Knife | Drop Rate |
|---|---|
| Flamingo M9 Bayonet | 34% |
| Popsicle Kurki | 34% |
| Coral M9 Bayonet | 8.8% |
| Lagoon Karambit | 8.8% |
| Surfboard Skeleton | 8.8% |
| Solar Kurki | 5.1% |
| Lime Skeleton | 0.31% |
| Mango Karambit | 0.31% |
| ??? Special Knife | 0.01% |
The Summer Case front-loads two common drops at 34% each, so your Flamingo M9 Bayonet and Popsicle Kurki pulls will be frequent. The rarer Mango Karambit and Lime Skeleton match the Butterfly Case's 0.31% floor, and the seasonal Special Knife sits at the same 0.01% ceiling.
After testing both Cases across multiple openings, the Butterfly Case is the better volume play. At 1,000 Coins per open versus 1,300 for the Summer Case, your 12,000 Coins from all four codes gets you 12 Butterfly opens or roughly 9 Summer opens. More attempts means more chances at the 0.31% and 0.01% tiers.
That said, the Summer Case has exclusive Knives that won't be available once the seasonal event ends. If collecting limited skins matters to you, split your Coins roughly 60/40 in favor of Summer Cases while the event is active.
New codes drop during special events, major game updates, and developer milestone announcements. The official Knife Duels Discord server is the fastest way to catch them as they go live. Bookmark this page too since the active list above gets updated whenever a new code releases or an old one expires.
Currently there are no expired codes in Knife Duels, which means every code that has ever been released is still redeemable. That won't last forever.
If you're building up your Roblox inventory across multiple games, there are plenty of other active code lists to work through. Check out the free Coins and Recruit Cases in Murder Duels or grab the working Blade Ball codes for free spins and sword skins. For weapon-focused games, the Level Your Weapon codes for free cash and boost potions are worth a look too.
For the full list of active codes across every major Roblox title, the Roblox guides collection keeps everything in one place.
