* A NDS game file (ROM file) is necessary to play a game. * Copy your own NDS game files to SD card or Internal Memory. (e.g. /sdcard/NDS/)Features:* Supports NDS game file (.nds, .zip, .7z, .rar). Please UnZip ROM if you want to play faster.* Support android 4.0+ (suitable for android 8.0+).* Save state and load state.* Quick save and Quick load.* Customize Control Buttons (Edit & resize).* Auto save frequency.* Screen filter: HQ2x, Scanline, Bilinear, Nearest 2X, HQ4X, ...