Looking for the latest working Knock Knock Room Defense Codes? Knock Knock: Room Defense, developed by Joy Nice Games, is a casual role-playing game that turns familiar places like schools, hospitals, hotels, and offices into haunted tower defense stages. You’ll have to keep the door shut and use your heroes to stop ghosts and monsters from getting inside.
Each match takes around five minutes, so you can jump in for a quick round without having to spend a lot of time on a single battle. You can also upgrade your bed, door, and heroes, then arrange your defenses to deal with different enemies and challenges.
The codes below give out Hero Contracts, Coins, SoulFire, Gold, and other rewards. These items can help when you’re upgrading your heroes and building up your defense, so I’ve listed every currently working code below.
Knock Knock Room Defense Codes (September 2026)
Here are all the currently working Knock Knock Room Defense codes. The latest codes include rewards such as Hero Contracts, Coins, SoulFire, and Gold.
- knock1m – Redeem this gift code for 4 Hero Contracts and 1,500 Coins
- knock500k – Redeem this gift code for 2 Hero Contracts and 1,000 Coins
- knock100k – Redeem this gift code for 500 SoulFire and 500 Gold
- knockdc – Redeem this gift code for exclusive rewards
Enter the codes exactly as they appear above. Pay attention to the lowercase letters, numbers, and any other characters because changing the code can prevent it from being accepted.
Knock Knock Room Defense codes can also stop working over time. If you get an invalid-code message, check the code first and try again. If the spelling is correct and it still doesn’t work, the code may have expired.
I’ll keep checking the list for new codes and remove the ones that are no longer active, so you can use this page to find the working codes without going through old ones.
Expired Knock Knock Room Defense Codes
These Knock Knock Room Defense codes have expired and can no longer be redeemed:
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How to Redeem Knock Knock Room Defense Codes?
You can enter your pack codes directly through the Profile menu. Here’s where to find the option:
- Step 1: Open Knock Knock: Room Defense and tap the Profile icon on the game screen.
- Step 2: Open Settings and find the Pack Code section.
- Step 3: Enter one of the active codes from the list above into the text box.
- Step 4: Tap Exchange to claim your rewards in-game.
If a code doesn’t work, check that you’ve entered every letter and number correctly. Since these codes use lowercase characters, it’s best to copy and paste them instead of typing them manually.
How to Get More Knock Knock Room Defense Redeem Codes
New Knock Knock Room Defense codes can appear when the game reaches milestones or during festivals, partnerships, special events, and other announcements. The developers share these through their official community channels, so those are the places to check when a new event goes live.
Bookmark this page: I’ll add new Knock Knock Room Defense codes here when they are released and remove codes once they expire. This also saves you from having to search through older posts to figure out which codes still work.
Follow the Official Social Media: Joy Nice Games can share new codes through Facebook, Instagram, X, Reddit, YouTube, Discord, and other community channels. Checking these pages around updates and events can help you spot new codes when they are released.
