Opening the Cretaceous…

Expedition 66

Something old is watching

Look into its eye. Then scroll, and follow it through the jungle, into the limestone, and out into a valley that time never closed.

Hover the eye

About the expedition

One king, one path, sixty‑six million years.

Primevil Paleo is an interactive scroll story. Every scene is a still image or a short clip, brought to life in your browser with depth, light and motion.

Imagery
AI‑generated stills and video
Depth
MiDaS DPT‑Hybrid depth maps
Motion
WebGL shaders, Lenis smooth scroll
Field notes
Published specimen and fossil data
Move your cursor to draw with the light

The end of the path

The king is waiting for you.

Field note 01 · Hell Creek

Tyrannosaurus rex

Lived
68–66 million years ago
Length
up to 12.3 m (specimen "Sue")
Range
Western North America

Keep up

It knows a way out of this century: into the limestone.

Time depth increasing

Into the dark.

Wet limestone, glowworms, the drip of water older than language. Ahead, a sun that set sixty‑six million years ago.

A hidden chamber in the rock

Cross two dinosaurs.
See what hatches.

Behind a limestone wall a fossil lab hums with light. Choose any two species, drop them into the glass chamber and a brand-new hybrid is born, with its own name, stats and story. Release it into a jungle, a lake or a cliff and watch it walk, swim or fly. 45 hybrids to discover, 8 levels to climb.

Free to play · works on phone and desktop · also in the menu

A card game from the deep cave

Pick in the dark. Flip together.

Two players, one hidden dinosaur each. Flip them together and the habitat decides who rules: land, water or sky, with special abilities, volcanic eruptions and an all-or-nothing showdown on a tie. 52 cards, 8 habitats, three AI opponents or hot-seat for two.

Free · works on phone and desktop · also in the menu

The lost world

Tap a creature

The field archive of the lost world

Every creature we found.
One field guide.

Collectible cards for every species we have dug up: size next to a human, the era it lived in, where its bones were found and a field-journal entry with sources. Filter by land, water and air, from the Permian to the Paleogene. Hybrids you breed in the Mixer are logged here too.

Free · works on phone and desktop · also in the menu

Deepest chamber of the cave

Every case file.
Every piece of evidence.

Below the limestone, in black water, the expedition keeps its forensic lab. Here the Case Files from our channel are stored and backed by evidence: interactive dashboards and simulations that show how scientists reached their numbers. Ask for the method, not just the number.

Free · works on phone and desktop · also in the menu

Broadcasting from the edge of the lost world

Fresh from the expedition.
Every new video.

The expedition camp sends out everything we publish: Devil Facts, Case Files and Popular Myths on YouTube and other networks, in English and in Czech.

Free · works on phone and desktop · also in the menu

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