Mod «Yayo's Pollution» for Rimworld (v1.4)

By default, the entire planet is polluted over about 13 years.
It is designed to create a pollution threat to the player's settlement around 5 years after the start of the game.

Pollution spreads across 6 settlements of the watster pirate faction. You can stop the pollution by attacking and destroying that settlement.

You can control everything in the options.

• speed of spread of pollution
• pollution spreading faction
• count of pollution creating base

Do not worry. When I increased the simulation speed by x300 and the game speed by x4, there was no lag.
You will need x4000 speed, not x4 speed, to experience lag in this mod.

Requires: DLC Biotech

then, pollution spread will stop