This _was_ done a couple of decades ago, it was available on the downloadable version of google earth (when it existed). I remember playing around with it in 2012.
Can confirm, we used to play it in the high school I went to around 2012 because it was one of the few games that the network filters didn't block.
Google Earth pro is still available for download with the flight simulator, which is much better than the new web version. I played around with it last night after being disappointed with the web version.