Download and install LDPlayer on your computer
Locate the Play Store in LDPlayer's system apps, launch it, and sign in to your Google account
Enter "世界首都クイズ" into the search bar and search for it
Choose and install 世界首都クイズ from the search results
Once the download and installation are complete, return to the LDPlayer home screen
Click on the game icon on the LDPlayer home screen to start enjoying the exciting game