To play GBA games on Android, you need an emulator. This acts as the console.
Important Safety Warning: Avoid shady websites that promise a "pre-patched" APK. These often contain malware. Always download the .IPS or .UPS patch file from reputable ROM hack communities.
While stable, this is a ROM hack. Use save states (emulator feature) plus in-game saves to prevent loss.
If you download a patch file (like an .ips file) separately from the base ROM:
Once you have the game running on your Android phone, keep these tips in mind:
Pokémon: This Gym of Mine has garnered a cult following for a reason: