Factorio Forums

Mod Info:

Spitter spawners actually spawn a mixture of biters and spitters, with a preset ratio (affected by the evolution factor). Now you can control that ratio, so that you can choose to have more biters and fewer spitters (or vice versa). To compensate for the difficulty reduction, there is an option to make the bigger biters more likely once the evolution factor allows their spawn.

No images for this mod, as it is so simple and is an abstract modifier.

spitters will still spawn from modded spawners