It looks really good in the video uploaded, but when I tried it myself it didn't look the same and was hard to tell what was going on. Not sure what the issue is.

The poster has conflated two different projects with a similar goal I believe.

The videos seem to come from a closed source project made by an outlet called Grow Now Games.

https://ko-fi.com/grownowgames/

https://www.grownowgames.com/

Yikes that would be my mistake - I was merging several submissions and thought it was the same project. Sorry!

The other links were:

https://cybercity.carino.systems/

https://github.com/MiguelCarino/CyberCity

Same here. The video looks cool, but what I see is much messier and hard to identify shapes and objects. Tried on latest Brave and Firefox on Arch Linux.

The video showcases his new version. The live version is his old version.