Working Book of Monsters Codes
Last updated August 21, 2026
No working codes right now
We're tracking Book of Monsters and will list codes here the moment the developers release them. If you spot one first, send it our way below.
How to redeem codes in Book of Monsters
- Launch Book of Monsters on Roblox.
- Look for a Codes, Shop or settings button — usually on the side of the screen.
- Paste the code exactly as shown above. Codes are case-sensitive.
- Press redeem to claim your reward.
Codes expire without warning — if one fails, it was almost certainly pulled by the developer.
Found a code we're missing?
Submit it and we'll verify it before it goes live.
About Book of Monsters
CODE: InsquidiousGame, ClassicHalloween --- If you like destroying things, then this game is perfect for you. It's basically a destruction simulator combined with natural disaster survival... but with monsters. In Book of Monsters, there are two teams: the Humans, and the Monsters. The humans must defeat the giant Monsters by jumping on the self-destruct buttons on their backs, while avoiding their destructive attacks. Link to Credits and the Change Log on the Cosmic Workshop Group Wall