Photosensitivity warning: this mod spawns nuclear explosions regularly, which cause a bright flash for all nearby players.
So there I was, running across my base to figure out why I didn't have any rocket control units, when BOOM! Biters.
This mod makes biters spawn in a calamitous explosion at a random location on the map. This mod is best used for maps with finite size (i.e. limited height and width). The default settings are loosely balanced for a 4096x4096 world.
Enjoy!