Dynamic custom underground pipes with material cost based on vanilla values.
Mods introducing new content into the game.
Some things explode when destroyed in lava and stuff. That is all. Why would you drop a nuke in lava anyways...
Small changes concerning balance, gameplay, or graphics.
Short underground pipes with less material cost and crafting time for compact builds. Mod redesigned and replaced with: https://mods.factorio.com/mod/custom-underground-pipes
Mods introducing new content into the game.