Predators
From FOnline: 2238 Wiki
A feature that makes the wasteland a little bit harsher.
Remaining inside a Real-Time encounter will attract various hungry predators from the wasteland. The longer you will stay in a location, the more nasty critters may come. In case of car encounters, the mobs will leave after a while if no players are there. Characters with at least 100% Outdoorsman skill are warned about the incoming mobs shortly before they appear. Turn-Based encounters don't have predators.