- A NDS game file (.nds, .zip, .7z, .rar) is necessary to play a game. - Copy your own NDS game files to SD card or Internal Memory. (e.g. /sdcard/SuperNDS/)- Use uncompressed ROM to play faster.- If the emulator crashes due to lack of RAM, please free up RAM by closing all running applications.LEGAL: This product is not affiliated with or endorsed by Nintendo in any way.