I’ve been doing some random playtest, and I just notice that creatures with “FLIES” flag actually goes up above a z-level. But I also noticed that they go even higher, and never go down.
Do they behave like this? cuz I’ve made a flying zed, then it flew up into the sky. And there it goes, never been seen again. Nothing special about it anyway… But imagine if it swoops down from above and pops right at you!