Some projects I worked on while playing GeoGuessr.
Geoguessr training maps
A big list of community maps you can use to train.
Geoguessr fun maps
A list of community maps that are fun to play.
A Scale for GeoGuessr
An attempt to provide a map scale, since GeoGuessr doesn't provide one.
Mountains with exaggerated topography
This is a list of maps by VeryGoodMaps (not me!) with exaggerated topography, which makes it easier to see where mountains are located.
Google Maps Pin Icons
Here is a helpful list of the icons that appear on Google Maps pins.
South Korea bus shelters and signs
South Korea has some interesting bus shelters and signs! This is a study of them.
Mongolia off-road coverage
Sometimes in Mongolia the Google car drives on roads that aren't marked on the mini-map. So you just have to know the landscapes of this beautiful country.
Bulgarian Taxis
You can regionguess in Bulgaria if you can remember the signage on the taxis.
Christmas Island Trekkers
With small countries (or territories) you have to pay attention to small details!