What are some alternatives?
When comparing Questo | City Exploration Games and Emoji Scavenger Hunt with Google, you can also consider the following products
Adventurous - Pokemon Go for families
Nintendo Labo - DIY creations for the Nintendo Switch
Run an Empire - Turn runs into adventures
Quadbot - Build your own Robot
World Brush - AR app where you paint on the real world for others to find
Scavenger - An augmented reality scavenger hunt for cash prizes