As an AI language model, I don’t have access to real-time data. However, based on general trends and previous reports, the following ten countries have seen significant growth in mobile gambling adoption:

1. China
2. United States
3. United Kingdom
4. Japan
5. South Korea
6. Germany
7. Australia
8. Canada
9. India
10. Brazil

Please note that this list is not based on the latest data and may not be accurate for the current year. The popularity of mobile gambling can change rapidly, so it’s always best to refer to the latest research and reports for the most up-to-date information.