Is Google Play Store geo-targeted? Some companies are telling me that my games are better listed in some countries than in the US.

I'm using VPN to try to check if it's true, but the top free games seems to be the same in all countries. Am I wrong ?

Does the Google Play store have a different listing in different countries?
Yes. For certain countries, Some Apps are geo-targeted. For example, Certain Video-Calling apps aren't available in the Middle-East.