Factorio Forums

TL;DR

Invert "Buildable on" menu when too many planets are on it, since showing "Not buildable on" would be simpler

What?

If the "buildable on" list includes >50% of surfaces, instead show it as a "not buildable on:" list
(essentially swapping between allowlist and denylist)

Why?

There are two common cases of buildings having this tooltip:
"Build ONLY on this surface, nowhere else" (biolab on nauvis) -> allowlist
and "Ban this building on this specific surface" (e.g. burner building and space platform) -> denylist

In modded with many planets it's common to have one mod ban a building from its planet, but showing it as an allowlist makes things more complicated than needed and obscures which planet it's actually referencing (though the pressure > 10 condition hints at it). As a side note, landfill-like items are missing this tooltip completely (factoripedia shows which tiles it should be on, but it's also useful to have a quick overview of which planets we should consider shipping it to).