The Tundra Expanse

Lore & Background

In the world of Planet Zoo, the Tundra Expanse is presented as a vast, open biome defined by its extreme cold and minimal vegetation. Unlike the lush rainforests or the golden savannas, the tundra palette is dominated by whites, pale blues, and muted earth tones broken by the dark basalt of outcropping rock. Snow covers the ground in seasonal drifts, small frozen pools and streams thread through the terrain, and the horizon stretches wide and unbroken—a deliberate design choice that gives the biome a sense of isolation and scale.

The animals that call this region home reflect that harshness. Polar bears patrol the icy shorelines, their massive frames built for hunting seals at the water's edge. Musk oxen huddle in groups, their thick shaggy coats a testament to millions of years of evolutionary pressure. Smaller creatures like the Arctic fox and Arctic hare rely on seasonal camouflage, their fur shifting between white and brown as the tundra cycles through its brief growing season. Above it all, the snowy owl glides in silent arcs, a ghost against the overcast sky.

For the player, the Tundra Expanse is as much a design challenge as a visual one. Keeping these animals warm, providing appropriate enrichment, and ensuring their enclosures feel like a natural extension of the frozen landscape rather than a glass box is central to the game's welfare system. The biome rewards players who understand that cold-climate animals need open space, shelter from wind, and access to water that doesn't freeze solid—details that make the tundra one of the more thoughtful and atmospheric biomes to build within.

In Their Own Story

The morning shift at the tundra wing always starts with the sound of wind. Not the gentle breeze you'd hear in the savanna paddock, but a low, constant moan that presses against the glass and makes the snow on the roof shift and whisper. Mara pulls her beanie lower and steps out onto the viewing platform, her breath a small cloud that dissolves almost instantly in the minus-twelve air.

Below her, the polar bear—Kael, the keepers call him, though he has no idea what that means—stands at the edge of the frozen pool, one paw testing the ice. He lifts his head, nostrils flaring, and for a moment his dark eyes meet hers across the glass. Then he turns, heavy and unhurried, and pads back toward the den where the heating vents hum beneath the fake rock face.

A musk ox chuffs somewhere to the left, steam curling from its nostrils in the cold. The tundra is quiet in the way only a frozen world can be quiet—not silent, but held, as if the whole landscape is waiting for the sun to decide whether it will show up today. Mara zips her jacket up to her chin and heads back inside, where the coffee is hot and the welfare report is, for once, all green.

Reader's Guide

The Tundra Expanse is a cold-climate biome in Planet Zoo that players can select when designing their zoo's layout. It features a snow-and-ice terrain palette, sparse tundra vegetation, glacial rock assets, and frozen water features that give it a stark, open atmosphere distinct from the game's warmer biomes.

When building in the tundra, the available animal roster shifts to cold-adapted species. Key residents include the polar bear, musk ox, Arctic fox, Arctic hare, snowy owl, walrus, and narwhal. Each has specific enclosure requirements: the polar bear needs access to water and space for swimming, the musk ox benefits from sheltered areas and social grouping, and the smaller mammals need hiding spots and appropriate ground cover.

Terrain tools in the tundra biome include snow-covered ground textures, ice patches, frozen ponds, and rocky outcroppings. Decorative assets lean into the cold aesthetic—bare stumps, driftwood, and low tundra shrubs. Players should pay attention to the animal welfare system, as cold-climate species have specific needs around temperature, enrichment, and enclosure size that differ from tropical or savanna animals.

The tundra works well as a visually distinct section of a larger zoo, creating a natural transition zone between warmer biomes. Its open, pale palette contrasts sharply with the dense greens of a rainforest or the golds of a savanna, giving players a strong visual anchor for their layout.

Did You Know?

• The Tundra Expanse in Planet Zoo is one of several biomes that changes both the available animal roster and the terrain/decoration assets players can use, making it a core part of zoo design rather than just a backdrop.
• Cold-climate animals like the polar bear and musk ox in Planet Zoo have specific welfare requirements tied to their tundra habitat, including access to water, shelter, and appropriate enclosure dimensions that differ fro
• Planet Zoo's tundra biome features a distinct visual identity—pale snows, icy blues, and muted earth tones—that contrasts sharply with the game's tropical and savanna biomes, giving players a strong palette for creating
• The game's design philosophy treats each biome as an ecosystem: the tundra's sparse vegetation and open terrain are not just aesthetic choices but reflect the actual environmental conditions that shape the behavior and n