Part of the vision of this demo is to emphasis that large, realistic open worlds can be generated by a relatively small team thanks to some impressive procedural generation systems. In fact, Epic included these stats with their press release, which apply to PlayStation 5 and Xbox Series X renditions of the demo.

The city is 4,138 km wide and 4.968 km long, slightly larger than the size of downtown Los Angeles
The city surface is 15.79 km²
The city perimeter is 14.519 km long
There are 260 km of roads in the city
There are 512 km of sidewalk in the city
There are 1,248 intersections in the city
There are 45,073 parked cars, of which 38,146 are drivable and destructible
There are 17,000 simulated traffic vehicles on the road that are destructible
7,000 buildings
27,848 lamp posts on the street side only
12,422 sewer holes
Almost 10 million unique and duplicated assets were created to make the city
The entire world is lit by only the sun, sky and emissive materials on meshes. No light sources were placed for the tens of thousands of street lights and headlights. In night mode, nearly all lighting comes from the millions of emissive building windows
35,000 simulated MetaHuman pedestrians
Average polygon count? 7000k buildings made of 1000s of assets and each asset could be up to millions of polygons so we have several billions of polygons to make up just the buildings of the city

这个演示的部分愿景是强调，由于一些令人印象深刻的程序生成系统，大型、现实的开放世界可以由一个相对较小的团队生成。事实上，Epic在他们的新闻稿中包括了这些统计数据，这些数据适用于PlayStation 5和Xbox系列X演示的版本。

这座城市宽4138公里，长4.968公里，比洛杉矶市区的面积略大。
城市表面是15.79公里²
城市周长为14.519公里
全市有260公里的道路
全市有512公里的人行道
全市有1,248个十字路口
有45,073辆停放的汽车，其中38,146辆是可驾驶和可破坏的。
道路上有17,000辆模拟交通车辆，是可破坏的
7,000座建筑
27,848个仅在街道一侧的灯柱
12,422个下水道孔
近1000万个独特的和重复的资产被创造出来以制造城市
整个世界只由太阳、天空和网格上的发光材料照明。没有为数以万计的路灯和车灯放置光源。在夜间模式下，几乎所有的照明都来自于数以百万计的发光建筑窗户。
35,000个模拟的MetaHuman行人
平均多边形数量？7000k的建筑物由1000个资产组成，每个资产可能多达数百万个多边形，因此我们有几十亿个多边形来组成城市的建筑物。

posted by wap, platform: Android
逛了逛，也没感觉很夸张，这画面风格让我想起来当年PS3画的大逃杀的饼