Step 5- Adding ROMs . To play the games, you need to have installed them first and saved them in a folder. From RetroArch's main menu, click Add Content. Now select Scan Directory and browse the files system until you get to the ROMs folder. If your ROMs are grouped in folders according to consoles, you will need to scan every folder separately. Go to the Settings menu in RetroArch. When you want to add ROMs or games to Retroarch, you should first make sure the databases are up to date by going to Online Updater from the Main Menu, then selecting Update Databases. This will ensure that Retroarch has the latest information when it comes to detecting your roms. Feb 14, 2022 &183; RetroArch will attempt to detect and use the correct core for use with the ROMs that are used as part of a playlist. Under some circumstances, it may be useful to manually set a particular core for one of its playlists. This can be accomplished within the Playlists submenu in the RetroArch settings. Playlist File Overview&182;.