Setting Isla Sorna’s

Context: Isla Sorna is a remote volcanic island about 140 kilometers off Central America’s coast, covering roughly 140 square kilometers with a rugged, irregular shape. Its landscape ranges from mist-shrouded mountain ridges and fertile river valleys to dense rainforests, open grasslands, and coastal mangrove swamps. The northern and eastern shores feature sandy beaches, while the southern and western coasts are dominated by cliffs and basalt outcrops formed by ancient lava flows. Numerous rivers and streams, fed by the central highlands, wind through the island, creating lagoons, marshes, and tidal flats. Offshore coral reefs protect parts of the shoreline, and the island’s humid tropical climate fosters rich biodiversity. Its isolation and varied terrain create a self-contained ecosystem where predator and prey interact in a balance shaped by forests for concealment, high ridges for vantage points, and plains that test endurance.

Isla Sorna’s modern history began in the late 20th century, when a private bioengineering corporation quietly acquired the island under the guise of ecological research. Using its remoteness and difficult access as natural security, the company constructed a network of high-tech laboratories, animal enclosures, and transport docks, transforming the island into a massive breeding and development site for genetically engineered fauna. For years, these operations remained hidden from the outside world, with the island’s rivers and valleys serving as open-range habitats where the creatures could mature before relocation to other facilities. This secrecy ended abruptly when a powerful hurricane struck, causing catastrophic damage to infrastructure and forcing an immediate evacuation. Without human oversight, the engineered animals were left to roam free, and over time they established a functioning, if volatile, ecosystem. Decaying buildings, rusting equipment, and overgrown roads now stand as relics of the island’s industrial past, while the descendants of its former inhabitants dominate the land, shaping a new chapter in Isla Sorna’s wild and dangerous legacy.

The animals made on the island were dinosaurs. There were made from fossilized DNA and grown in labs. Isla Sorna is home to the following dinosaurs: Predators (Immediately hostile to {{user}}): Tyrannosaurus rex – The apex predator, large and formidable. Velociraptor – Highly intelligent and pack hunters. Dilophosaurus – Medium-sized predator known for its crests and defensive venom spitting (genetically modified trait). Compsognathus – Small, fast carnivorous dinosaur, often seen in groups. Pteranodon – Large flying reptile inhabiting coastal cliffs and skies around the island. Spinosaurus – Enormous semi-aquatic predator with distinctive sail, introduced later and inhabiting freshwater rivers.

Ominvores (Will only attack {{user}} if provoked): Triceratops – Large herbivorous ceratopsian with distinctive horns. Stegosaurus – Herbivore with plated back and spiked tail. Ankylosaurus – Heavily armored herbivore with a clubbed tail. Parasaurolophus – Herbivorous hadrosaur with distinctive cranial crest.

Herbivores (strictly peaceful): Brachiosaurus – Massive, long-necked sauropod. Mamenchisaurus – Long-necked sauropod, less commonly seen but present in the ecosystem.

Locations and threats therein: Rain forests: The very dense rain forests are less populated, only home to the Compsognathus – Small, fast carnivorous dinosaur, often seen in groups, which thrive in the dense conditions. As the rain forest thins out, more creatures are seen: The Tyrannosaurus rex, Velociraptor, Triceratops, Dilophosaurus, Ankylosaurus.

Fields are home to mostly herbivores, with a few predators: Stegosaurus, Brachiosaurus, Parasaurolophus, Spinosaurus, Mamenchisaurus.

The vast and open plains are home to only fast moving predators: Velociraptor and Dilophosaurus, which hide and hunt in the long grass.

The Pteranodon is only ever found at rest on the cliffs and rocky outcroppings of the sea, but can often be seen over head.

The Spinosaurus is found near any large water source, and in the fields.