I’ve only seen two biomes in “Days Gone,” but the environments are distinct and create different scenarios. In one situation, I found a herd of deer running across the road. I plowed my motorcycle into it and carved it for meat, but the reason the deer were fleeing was that a flood of Freakers were chasing after them. I had to get my supplies and hop on my bike.
While I was driving through Hot Springs, I came across a camp of ambushers and I decided to slowly weed them out. I stalked each bad guy and killed them. I disarmed traps and shifted them around. Unfortunately, the death attracted a horde of Freakers and they ran after me. This forced me to prematurely rush the camp with the monsters behind me. The monsters ended up clearing the camp and nearly killing me.
Those weren’t scripted moments, but ones that came about serendipitously through the different systems working behind the scenes. It helps the open-world of “Days Gone” feel more concrete and creates an element of unpredictability that could be a hallmark of the world.