While touch controls work, a Bluetooth controller (like an 8BitDo) is highly recommended for 16-bit games and above. Regarding "Links" and Legality
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collection is excellent for Android as it is optimized for space and includes many of the most popular titles. How to Install Content on Android Download and Extract : Most packs come as files. Use an app like to extract them into a folder on your phone (e.g., /Storage/Emulated/0/Roms/ BIOS Placement : Place all your BIOS files directly into the RetroArch/system/ While touch controls work, a Bluetooth controller (like