Spaghetti
Challenge to force buildings closer together.
The idea is to promote spaghettification.
If your build too far from your start or base then entities will simply be dropped on the ground as items.
Excludes pipes and belts and offshore pumps.
Other Mods
https://mods.factorio.com/mod/modmash
https://mods.factorio.com/mod/mininukes
https://mods.factorio.com/mod/coffee
https://mods.factorio.com/mod/heroturrets