fork from Creeper: https://mods.factorio.com/mod/creeper originally made by Chris Richards.
Copyright 2020 Chris Richards https://bitbucket.org/doktorstick/creeper/src/master/

Adopted to Factorio1.1 and Warmonger mod to allow creep corrode player's buildings from afar in easy mode. Nothing else changed and no plans so far.

!!! Personally I do recommend to use Rampant + Warmonger instead, because that duo creeps better and puts much more horror and despair than unprotected creep spread !!!

Creeper2 creeps on Warmonger by letting the creep creep. Pollution drives the creeping, but only via the spawner connected to it. The more active the spawner, the more active the creep; Rampant death worlds beware! Creep without a spawner feeding it lay dorment, and those that are creeping, creep mostly toward heavier polluted sectors.

Creep also contributes to the evolution factor, which can be inspected with the console command /creepolution. The amount of growth and the evolution factor can be configured in the runtime (map) settings.