You will see files named like r.0.0.csv , r.-1.0.csv , etc. These store the heightmap data. Do not use standard Excel. Download Notepad++ or CSVed . Open one of the region files (e.g., r.0.0.csv ).

Remember: The game updates frequently. A seed that works today may break tomorrow. For a future-proof fix, learn the . It takes three minutes and transforms any world—corrupted or fresh—into a perfect, geometrically flat paradise for your colony.

However, many players have run into a frustrating problem. You input the famous flat world seeds—like “Flat as a Pancake” or “Flatearther”—only to spawn on a landscape riddled with sudden cliffs, floating islands, or deep ravines. You might have also experienced a corrupted flat world save where the ground suddenly drops into a void after an update.

Now, stop terraforming and start expanding. Your colonists need those berry bread quotas met by sunrise.

When the game updates (e.g., moving from version 0.8 to 0.9 or 1.0), the terrain generation algorithm often changes slightly. A seed that produced a glass-smooth plain in version 0.7 might produce a chaotic badlands in version 1.0. Furthermore, mod conflicts (like the Megacolon or More Monsters mods) can override the base generation files, causing even verified flat seeds to fail.

This article provides the definitive . We will cover why flat worlds break, the exact seeds that still work in the latest version (as of 2025-2026), and a step-by-step technical fix to restore flat terrain in existing saves. Why Do Flat World Seeds Break in Colony Survival? Before diving into the fix, it is crucial to understand the root cause. Unlike Minecraft, where flat is a distinct world type, Colony Survival relies on procedural generation based on 64-bit seeds . The terrain is generated using multiple octaves of Perlin noise.

In the blocky, voxel-based world of Colony Survival , few things are as satisfying as a perfectly flat, uninterrupted expanse of land. A flat world eliminates the tedious terraforming required on mountainous or hilly seeds, allowing you to focus entirely on what matters most: optimizing your conveyor belts, expanding your colony, and defending against the nightly zombie raids.

This involves editing game files. Back up your Colony Survival folder in %AppData%/LocalLow/ before proceeding. Step 1: Locate the Region Files Navigate to your Colony Survival save directory: C:\Users\[YourUserName]\AppData\LocalLow\Sunnyside Games\Colony Survival\Saves\[YourWorldName]\Regions