Roblox – Book of Monsters Codes (December 2021)

This simple tutorial will walk you through a list of all active (working) promo codes, including the Book of Monsters codes (game developed by Cosmic Workshop). Because they can expire at any time, you should redeem them as soon as possible. If you come across a promo code that is no longer valid, please let us know so we can update the list. Please keep in mind that codes do not include Robux!

All Book of Monsters Promo Codes

Roblox Update: December 2021

Active and Valid OP Codes

Use these promo codes to enhance your hero’s appearance or to obtain in-game goodies like as clothing, cash, and more!

After using this code, you will receive some keys to earn for free. You can get a lot of gems by using the codes below.

  • KitchenFan – After using the code you can get exclusive free reward.
  • InsquidiousGame – After using the code you can get exclusive free Insquidious costume reward.
  • HaHaHalloween – After using the code you can get exclusive free reward.
  • 85KLikes – After using the code you can get exclusive free reward.
  • BugFixShutdown – After using the code you can get exclusive free reward.
  • TwitterCow – After using the code you can get exclusive free reward.
  • BookOfMonstersHasCODES – After using the code you can get exclusive free reward.

These codes are case sensitive, so be very careful when entering them.

Expired Codes

This is a list of expired codes, these codes can no longer be redeemed.

  • The are no expired codes yet.

How to Redeem Book of Monsters OP Working Codes

Press Options button (left side of the screen). Type your code to the opened-up window. Then after pressing Submit button get your free reward.

How to Play Book of Monsters Game

This game is ideal for those who enjoy destroying things. It’s a combination of a destruction simulator and natural catastrophe survival… but with monsters. There are two teams in Book of Monsters: Humans and Monsters. The humans must defeat the enormous Monsters by hopping on their backs’ self-destruct buttons while dodging their damaging attacks.

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