You can plug in your phone, download an emulator, or install the Google Play Store to access Android apps on your computer. Some tinkering may be required.
If you have an Android phone, you'll have access to millions of apps on the Google Play Store. While many of these apps are legitimate, some are fake, and might even install malware on your device.
Original Xbox emulator X1 BOX arrives on Android through an unofficial xemu port, but performance issues and setup requirements remain for now.