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Cretaceous Calamity

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Boxart of Cretaceous Calamity

Cretaceous Calamity is a user-made expansion currently in production by the Mysterious Map Marvels user-made content team. It focuses on the Cretaceous period, and includes plants and animals from the period, as well as new scenery objects. Several new features will also be included, such as modified animal behavior and larger maps. Originally planned to be a map-only expansion pack, it has since evolved into a full-fledged expansion pack. It is not endorsed by the original creators, and as such is only a mod, thus cannot be sold. The holiday teaser can currently be downloaded at Taiga.

New Features

All-New Extra Large Map Size! First-ever Custom Script (for Easter Egg)! First animal to form persistant social groups! Albertosaurus cloned as egg rather than young! Various advanced AI features for Albertosaurus! New theropod animations! New globe locations!

So far, only Albertosaurus has been mentioned and released.

Cretaceous Calamity Albertosaurus



  • Dinosaur crate (comes in three sizes)
  • Cretaceous-themed objects
  • Giant Sequoia Reskin and Update
  • Sequoia Tunnel Reskin and Update


Cretaceous Calamity will be the first user-made expansion to include functional maps. Unlike saved games, which must be installed to a player's profile, these will function as official base maps for Freeform and Challenge games. Maps and biomes to be included are as follows:

  • Temperate Rainforest Biome (with 5 new plants and 3 rocks)
  • Extra Large Grassland Map


ZT2 Cretaceous Calamity01:49

ZT2 Cretaceous Calamity

The wait for Cretaceous Calamity has been highly anticipated among the Zoo Tycoon fanbase. Mysterious Map Marvels once released a weekly picture (dubbed "CC Mondays" as a reference to the "EA Wednesdays" Blue Fang Games did) or a 360° spin video with a voiceover showcasing a particular animal and its features, which can be seen on YouTube (right). These were usually accompanied with a poem that allowed fans to guess what the next animal was before revealing. Unfortunately, Mysterious Map Marvels no longer does "CC Mondays", though they still update periodically. Amazingly, the Zoo Tycoon Volcano page for Cretaceous Calamity is over 267 pages long. However, it had been locked in an effort to stop spammers and such from spamming up the thread. But the topic was reopened by MMM member King Hoopla.

An incomplete and unfinished version of Cretaceous Calamity was leaked online, and MMM members Incinerox and JVM spearheaded against them, recommending members do not download the leaks. However, they moved quite far around the community, prospering especially at Caldera Unlimited. Waves of criticism were aimed at MMM over the unfinished content, including issues with the size of the animals, and JVM mistakenly reported Cretaceous Calamity was cancelled before Incinerox declared it was only on hold. Leaks continued and eventually spread to YouTube with legocreator5000 becoming particularly infamous for these activities, forcing MMM to reveal they had been working in secret for months in an attempt to stop it. MMM experienced direct criticism from several members of the community for these efforts, and JVM left Mysterious Map Marvels as a result shortly after CC's continuation was announced publicly. He left the community soon afterward. Legocreator5000 then apologized.

Release Date

A teaser was released Christmas 2013. It is unknown when the rest of the pack will be released.

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