what do you think about:

https://www.ovr.ai/

(they also have a treasure hunt)- https://www.ovr.ai/treasure-hunt/


this could be a competitor? It is not perfectly the same but somehow similar and it looks quite advanced

That video could use a better recording system, hard to hear in some places.

I'm not connected to the dev team but here are my best guesses.

1) They seem to be still active as of a few days ago. You can contact the main dev on Twitter.

2a) It looks like they use ubq for their wallet and the github link from the website is https://github.com/ubiq/fusion/releases

2b) The geocaching app is still in closed beta, so you would probably have to sign up to get a download link. Dave is a public figure and known to a lot of people, it's a safe app https://geo.money/getting-started

2c) Hopefully they will integrate the wallet and geocaching part into one app when it is out of beta. If you are a developer you could probably contact them if you want to help.

3) a) A few years ago there was a Chinese coin very similar to Geo but it had never developed as far as Geo has to the best of my knowledge. The coin was mentioned on this thread if you want to research it.

b) Pokemon go was also a similar project but does not have a currency as far as I know https://en.wikipedia.org/wiki/Pok%C3%A9mon_Go

c) There are various projects being developed which touch on using gis type stuff for various uses, including this project https://foam.space/ which tries to address spoofing and might be worth looking into as a solution to geospoofing issues

This really is one of the all time great coins so far, it just needs some interest from the public.