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I always unzip my files on my computer (as some emulators dont like zipped files) and transfer the unzipped contents over (.smc, .gg, etc.) The only ROMs I don’t unzip are arcade based ROMs like mame, FBA, and neogeo. See each emulator page for which file types are accepted for each emulator:


Likelihood is you have both the zipped files and contents of the zipped files in the ROMs folder so you see both in emulationstation. You really only need the contents. Once you save games it will create a .SRm save state file or something like that but the save state files won’t show up in emulationstation