Savanna

Lore & Background

Historically, many pre-spaceflight civilizations on RimWorld planets attempted to settle these grasslands, only to be driven out by the relentless heat and the sheer ferocity of local predators. The open terrain offers little natural cover from raiders or atmospheric storms, making it a strategic nightmare for defense despite its agricultural potential during wet seasons. Today, these lands are often claimed by nomadic tribes who understand how to move with the seasons, or by desperate colonists forced to adapt quickly or perish.

In Their Own Story

The sun hung like a molten coin above the horizon, baking the golden grass until it shimmered in the heat haze. Kael wiped sweat from his brow, his eyes scanning the endless expanse for any sign of shade. A distant rumble echoed—not thunder, but the heavy footsteps of a giant predator stalking through the dry brush. He tightened his grip on the shovel; today's irrigation trench had to be finished before the temperature spiked further, or the colony would lose another crop to the unforgiving earth.

Reader's Guide

The Savanna presents a dual threat: extreme heat during the day and rapid cooling at night. Colonists must prioritize building shade structures early, as exposed workers will quickly succumb to heatstroke without adequate cover. Water is the most critical resource here. While rain occurs seasonally, it is often insufficient for large-scale farming. Building reservoirs or cisterns immediately upon arrival is essential to store water for dry spells and fire suppression. Flora is sparse but includes useful trees for wood and stone outcrops for mining. However, the lack of dense forests makes gathering difficult. Unique fauna like giant predators roam freely, requiring strong defenses or traps to prevent livestock losses. Strategically, the open terrain offers excellent visibility against raiders but provides no natural cover for ambushes. Colonists should fortify their perimeter with walls and turrets while utilizing the flat ground for efficient base layout.

Did You Know?

• Savannas are one of the few biomes where fire can spread rapidly across dry grass, posing a constant threat to wooden structures.
• The biome's open terrain makes it ideal for spotting incoming raiders early but terrible for hiding from them.
• Certain megafauna species found in savannas have adapted to sleep during the hottest parts of the day and hunt at dawn or dusk.