Corrosive gas could check for item’s acid resistance to determine how well it protects (something like environmental protection * acid resistance / 10), but having gas actually damage items would be pure bother and tedium - currently all items are easy to repair, it just takes player action to do so.[/quote]
Perhaps we could say it’s an ammonia based fog? It’'s mildly caustic, quite irritating, and in significant quantities, suitably lethal.
I’ve generally considered the ‘acid rains’ to be some manner of dilute, yet pain stimulating organic agent (formic acid or some other carboxylic relative) as they wouldn’t completely obliterate our environment or rust away metals in a single shower, while still being a notable hazard.
An ammonium fog of some sort would follow the same logic in being another common organic material that could reasonably form a significant component of an alien ecosystem, while ALSO providing players with yet another useful resource to be harvested (using refrigeration units to build vapor distilleries.)
[quote=“vultures, post:76, topic:8560”]You’re just getting more ‘hardcore’ as the message count piles up on the thread.
…
but it sure would be nice if someone explained why it’s suddenly raining apricots the next time I attempt to play the latest CataDDA build.[/quote]
As for ‘blood rain’ specifically, that seems a bit too Dwarf Fortress. Too thematically HELL DIMENSION OF LOST SOULS! It ‘could’ be quite feasible for some of the alien portals to be connected to an unimaginably huge creature that also happens to use an iron based circulatory fluid… but it’s not the first impression that would be made by a Blood Shower.