Shchierbin - intermediate world with Vanadium.
Mods introducing new content into the game.
New places to build more factories.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Map generation and terrain modification.
New Ores and resources as well as machines.
Things related to oil and other fluids.
Furnaces, assembling machines, production chains.
Not sure where "ballon" comes from, but cylinder is the usual term for this kind of container.
