Book of Monsters
A Roblox experience owned by Cosmic Workshop.
SimulatorENdestruction simulatorteam-based survivalhalloween theme
Book of Monsters is a simulator experience created on 2016-06-14. It currently has 60 players. The game has accumulated 101,706,145 lifetime visits, 624,955 favorites, and an 80% like percentage.
Description (written by the developer; not a statement by this register)
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
Last updated by the developer 10 Aug 2026, 08:22 UTC.
Live players over time
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 10 Aug 2026, 15:32 | 27 | first reading |
Concurrent players at each of our measurements (insert-on-change).
Monetization — game passes
Game passes for sale and their prices, measured from the Roblox passes API. Developer products bought inside the game aren’t publicly listable.
Badge funnel
How many players have ever earned each badge — a proxy for how far players get before they stop. Steep drop-offs mark where a game loses people. Win rate is the past-day share of players who earned it; categories are assigned by a language model from each badge’s own name and description.
Roblox recommends these alongside it
Roblox’s own “games like this” rail, as we recorded it on 22 August 2026. The order is Roblox’s, not ours. Which games it points at most →
Community wiki
A fan-maintained encyclopedia this game has grown — measured from Fandom’s API. Not affiliated with Fandom.