funny timing, i was exploring the same, some friends and me play alot of geogussr (a game where you put into streetview somewhere on the world, and have to find out where) lately.

I want to make it more video game like, cause the jumps of google maps make me motion sick.

I used google streetview as image source (cause you need to read signs, cars, see geometry) and colmap to reconstruct 3d chunks.

But it never really worked that well, jumps in time (cause the google car does not always continuously scan) and the image density is just too low, but was a fun side project.