Transforms many overlooked details. You can enable or disable the following options in config.lua: Modular Armor doesn't need Processing Units; Plastic is made from Light Oil; energy from all fuel is lowered; alien evolution over time is 10x slower, but pollution is increased 5x; biters won't eat your railroads and train stops; all floors can be placed up to water's edge; ammo recipes need coal as accelerant; make Roboport doors quieter; disable picking up Robots while they're flying.
Small changes concerning balance, gameplay, or graphics.