A simple weather system mod for adding rain and lightning to planets with some tweaks for realism and balancing.
Mods introducing new content into the game.
Changes to enemies or entirely new enemies to deal with.
Map generation and terrain modification.
Changes to power production and distribution.
Poor forests.
Trees are the true enemies of Factorio
I hate rocks more.
There should be tougher forests with Ironwood trees (that don't burn), and when cut down give me Iron.