...But why? (critter spawns)

[Gargoyle Girl]

So I recently found a Darkling city in the water biome and I liked the appearance of it, so decided to dig out a bunch of floor tiles for my own base. (IT turned out awesome, btw.) I was stoked to get it completed, as I'd found some insteresting decorations I also wanted to use to finish out out.

Turns out city floor is like bridge tiles, so I would have to dig out the entire area I was converting. No worries, I can do that. Some hours later and the floor of my base is looking pretty neat. ...except on thing.

Worms. TONS of them. EVERYWHERE. Where are they coming from?! I went around squishing them, thinking they had gotten in during the placement somehow (which I now know isn't possible because I *dug out the entire floor to place the city floor, so there was no place for them to spawn from*). Then I wondered if they were somehow spawning underneath the outer wall, then squeezing into the base that way, since I hadn't tiled under those walls. Some time later, and the outer walls had all been cleared, tiled under and replaced. Safe, right?

WRONG. Worms were still spawning, seemingly from nowhere! There is no ground under the tiles (if you remember, bridge type tiles show a column descending into darkness underneath; no ground). The areas that have ground have all been tiled over. And yet, somehow, worms are appearing. Why? Why U du dis?! I tend to fixate more than a little on my bases, making them look good and decorating and symmetrical, and here the game is like, 'Nice base you got there... mind if I THROW A DOUBLE HANDFUL OF WORMS ON THE FLOOR?!'

How are these worms spawning? From the metal, glass and gold city floor? What kind of worms are these (they're just the normal dirt variety; I'm just spazzin a bit xD). Someone please fix this detail, small as it is. It's seriously stressin me out.

[Neirgara]

All critters spawn in their correspondent biome.

The earth worms spawn from any floor tile in the dirt biome. The metropolitan tiles you used are not like bridges (water does not flow under them), but like regular floor tiles, which means, that critters can spawn from them.

Usually, the number of critters should be "normal", but sometimes they don't stop spawning and can become very overwhelming. I experienced that once with approximately 2 glowworms per tile, which crashed my game. But after a new start everything reset and was back to normal. But there still will be a few earthworms crawling on the ground, and so far, there is no way to prevent them from spawning.

Perhaps they will implement a way to toggle critter spawns or implement another way to control it, if enough people want it changed.