99 Nights in the Forest has solidified its reputation as one of Roblox’s most thrilling and terrifying co-op survival games. Every match drops players deep into a haunted wilderness crawling with Cultists and monsters—and only teamwork, strategy, and a well-built Class can save you.

Diamonds (also known as Gems) are the most valuable currency in the game. You’ll need them to unlock new Classes and Talent Rerolls, both of which can dramatically boost your survival odds.

Latest Working 99 Nights in the Forest Codes

Codes in 99 Nights in the Forest are rare—so if you see one, redeem it immediately! The following have been confirmed working as of November 2025:

Active Codes

afterparty

  • Rewards: 15x Diamonds (Gems)
  • Status: WORKING

yay fishing

  • Rewards: 2x Diamonds (Gems)
  • Status: WORKING (Special Steps Required)

Special Redemption Instructions – “yay fishing” Code

This code isn’t entered through the usual Codes menu—you’ll need to perform a few steps in-game:

  1. Start a solo or multiplayer game.
  2. Upgrade your campfire to Level 2.
  3. Visit the Fishing Shack and pick up an Old Rod.
  4. Stand next to a fishing hole and equip the rod.
  5. Open the in-game chat (/ key), type yay fishing, and press Enter.
  6. Two free Diamonds will appear near your fishing spot—check the water if you don’t see them right away!

Recently Expired Codes

These codes no longer work as of early November 2025:

  • happyhalloween (Expired)

It’s always smart to track expired codes so you don’t waste time trying to redeem them.

How to Redeem 99 Nights in the Forest Codes

Redeeming standard codes for Diamonds is simple, but it must be done from the main lobby (not mid-game).

  1. Launch 99 Nights in the Forest on Roblox.
  2. In the main lobby, click the Diamond Icon on the bottom-left of the screen—or speak to the Currency NPC.
  3. A shop menu will open. Click the “Codes” button (bottom-right corner).
  4. Enter a working code (like afterparty) into the text box.
  5. Click Submit to instantly claim your free Diamonds!

November 2025 Update Highlights

This month’s update focuses on two big things: post-Halloween content and game balance improvements. The introduction of Daily Quests has been a game-changer, offering players a steady way to earn Diamonds without relying solely on rare codes or grueling survival runs.