About This Game
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
Game Passes (6)
Costume Starter Pack
Get 5 Costumes for the Monster of your choice from a Washing Machine costume ...
Starter Pack
Worth 375 Robux!! Players with this gamepass will receive... - 300 Dux - 1...
VIP
Players with this gamepass will receive... - A VIP nametag - 1.5x exp - A fre...
Extra Coins
Gives you 1.5x Coins!! It's expensive for a reason. Note: This gamepass doe...
Princess Troll Bundle
Troll other Humans by turning them into PRINCESSES 👸! + Exclusive "Pretty Pr...
Play My Way Pass
Removes the level requirements on monsters, allowing you to get the monster y...
Badges (61)
Tutorial Conquerer
Awarded for completing the (very lame) tutorial
Another Basic Egg
Another year, another easy egg
Obby in the Lobby
Awarded for beating the obby... in the lobby!
Donut Egg
I love donuts!
Animatronic Minotaur
He's always watching you
Dice Egg
It may take many rolls to get this egg
Virtual Pet Egg
Your pet grows up as you play, raise it into an adult!
Common Knittens Collector
Awarded for collecting all the Common costumes for Knittens!
Common Meltzer Collector
Awarded for collecting all the Common costumes for Meltzer!
Common Reptire Collector
Awarded for collecting all the Common costumes for Reptire!
Piggy Egg
What game has a piggy?
Common Casa Loco Collector
Awarded for collecting all the Common costumes for Casa Loco!
Rare Knittens Collector
Awarded for collecting all the Rare costumes for Knittens!
Lazy Dev Egg
This egg loves going out to different parts of the city!
Honey Egg
Collect pollen and convert it into honey to get this egg!
Rare Meltzer Collector
Awarded for collecting all the Rare costumes for Meltzer!
Wheelchair Egg
Injured so soon? Guess that will be another hospital visit
Common LlamaBot Collector
Awarded for collecting all the Common costumes for LlamaBot!
Common DoodleBoard Collector
Awarded for collecting all the Common costumes for DoodleBoard!
Rare Reptire Collector
Awarded for collecting all the Rare costumes for Reptire!
Pizza Egg
You probably have to make some sort of delivery...
Common Minotaur Collector
Awarded for collecting all the Common costumes for Minotaur!
Legendary Knittens Collector
Awarded for collecting all the Legendary costumes for Knittens!
Holiday Minotaur
Awarded for buying the Special Minotaur Costume during the 2024 Holiday Event!
Master Knittens Collector!
Awarded for collecting EVERY costume for Knittens!!!
Intermission Egg
Maybe you can only get this egg during intermission?
Legendary Meltzer Collector
Awarded for collecting all the Legendary costumes for Meltzer!
Common Insquidious Collector
Awarded for collecting all the Common costumes for Insquidious!
Holiday Knittens
Awarded for buying the Special Knittens Costume during the 2024 Holiday Event!
Master Meltzer Collector!
Awarded for collecting EVERY costume for Meltzer!!!
Legendary Reptire Collector
Awarded for collecting all the Legendary costumes for Reptire!
Holiday Minotaur 2023
Awarded for buying the Special Minotaur Costume during the 2023 Holiday Event!
Master Reptire Collector
Awarded for collecting EVERY costume for Reptire!!!
Holiday Meltzer
Awarded for buying the Special Meltzer Costume during the 2024 Holiday Event!
Holiday Reptire
Awarded for buying the Special Reptire Costume during the 2023 Holiday Event!
Rare DoodleBoard Collector
Awarded for collecting all the Rare costumes for DoodleBoard!
Holiday Casa Loco 2023
Awarded for buying the Special Casa Loco Costume during the 2023 Holiday Event!
Holiday Knittens 2023
Awarded for buying the Special Knittens Costume during the 2023 Holiday Event!
Rare Casa Loco Collector
Awarded for collecting all the Rare costumes for Casa Loco!
Holiday Casa Loco
Awarded for buying the Special Casa Loco Costume during the 2024 Holiday Event!
Holiday Meltzer
Awarded for buying the Special Meltzer Costume during the 2023 Holiday Event!
Rare Insquidious Collector
Awarded for collecting all the Rare costumes for Insquidious!
Holiday Reptire
Awarded for buying the Special Reptire Costume during the 2024 Holiday Event!
Holiday DoodleBoard 2023
Awarded for buying the Special DoodleBoard Costume during the 2023 Holiday Event!
Rare Minotaur Collector
Awarded for collecting all the Rare costumes for Minotaur!
Holiday LlamaBot
Awarded for buying the Special LlamaBot Costume during the 2024 Holiday Event!
Holiday LlamaBot 2023
Awarded for buying the Special LlamaBot Costume during the 2023 Holiday Event!
Rare LlamaBot Collector
Awarded for collecting all the Rare costumes for LlamaBot!
Legendary Insquidious Collector
Awarded for collecting all the Legendary costumes for Insquidious!
Holiday DoodleBoard
Awarded for buying the Special DoodleBoard Costume during the 2024 Holiday Event!
Holiday Insquidious 2023
Awarded for buying the Special Insquidious Costume during the 2023 Holiday Event!
Legendary DoodleBoard Collector
Awarded for collecting all the Legendary costumes for DoodleBoard!
Legendary Casa Loco Collector
Awarded for collecting all the Legendary costumes for Casa Loco!
Master Insquidious Collector!
Awarded for collecting EVERY costume for Insquidious!!!
Legendary LlamaBot Collector
Awarded for collecting all the Legendary costumes for LlamaBot!
Master DoodleBoard Collector!
Awarded for collecting EVERY costume for DoodleBoard!!!
Master Casa Loco Collector!
Awarded for collecting EVERY costume for Casa Loco!!!
Master LlamaBot Collector!
Awarded for collecting EVERY costume for LlamaBot!!!
Holiday Insquidious
Awarded for buying the Special Insquidious Costume during the 2024 Holiday Event!
Legendary Minotaur Collector
Awarded for collecting all the Legendary costumes for Minotaur!
Master Minotaur Collector!
Awarded for collecting EVERY costume for Minotaur!!!
Game Details
- Max Players
- 20
- Created
- June 14, 2016
- Last Updated
- October 31, 2025
- Avatar Type
- MorphToR15
- Votes
- 150 Thousand up / 36 Thousand down
- Universe ID
- 165475652
- Root Place ID
- 434010118
- Copying Allowed
- No
- Data Updated
- February 27, 2026
Similar Games
![[🔥] 99 Nights in the Forest 🔦](https://tr.rbxcdn.com/180DAY-a605be08ca78a8595424f6f98aee9ef3/512/512/Image/Png/noFilter){kind=small}
[🔥] 99 Nights in the Forest 🔦
270 Thousand playing
Murder Mystery 2
130 Thousand playing
Forsaken
62 Thousand playing
❤️ Evade🏮
55 Thousand playing
![🌼 Dandy's World [ALPHA]](https://tr.rbxcdn.com/180DAY-8aa9b5d970387fddcddf59db718d18d7/512/512/Image/Png/noFilter){kind=small}
🌼 Dandy's World [ALPHA]
44 Thousand playing
Flee the Facility
29 Thousand playing
![Scary Shawarma Kiosk: the ANOMALY [horror]](https://tr.rbxcdn.com/180DAY-e846d1005fadb69ef888564275676f29/512/512/Image/Png/noFilter){kind=small}
Scary Shawarma Kiosk: the ANOMALY [horror]
21 Thousand playing
![[100M!] You VS Homer](https://tr.rbxcdn.com/180DAY-797712decb58e494020e5dc1597ce15d/512/512/Image/Png/noFilter){kind=small}
[100M!] You VS Homer
13 Thousand playing