1) Prepare the gameThere are many classic games on www.coolrom.com, which can be downloaded by yourself.2) Add gameThe first method: Take out the TF card and connect to the computer in the shutdown state, open the first partition, and put the prepared rom into the corresponding emulator in the romsPlease put the corresponding simulator BIOS into the bios folder, and put the corresponding boot screen into the splashscreen folder.The second method:a) Please connect the device to the network first.You can see the IP address of the machine on the Wi-Fi connection interface or the Show IP interface. The IP address in the example below is: 192.168.3.5In the computer resource manager, enter \\192.168.3.5 (or directly enter \\retropie) and press Enter.If prompted to enter a user name and password, the default user name: pi, password: raspberry.b) At this time, the 4 folders are bios, configs, roms and splashscreens.Please put the corresponding simulator BIOS into the bios folder;Please put the corresponding game in the folder corresponding to the emulator name under the roms folder;The configuration file of the corresponding simulator. Please put the patch file in the corresponding simulator folder under the configs folder;The corresponding startup screen can be placed in the splashscreen folder.c) Open the roms folder:You can see many subfolders, each of which corresponds to a simulator game, and the corresponding game needs to be placed in the corresponding folder to be correctly identified.d) Example of the folder list corresponding to the simulator:Arcade-FBA format romsarcade baArcade-MAME format romsarcademame2003SNES roms
esPSP romspspPS1 romspsxNES/FC roms
es ……e) After restarting Emulationstation, you can see the added games.Note: Retropie distinguishes games by folder name, please do not modify any directory structure, just copy the game files to the folder of the corresponding simulator.For more information, please refer to:https://retropie.org.uk/docs/Transferring-Roms/