Plex started as a way to organize and stream your media library, but it has since expanded to include live TV, ad-supported streaming video, and Tidal music, among other things. Now, Plex is dipping its toe into gaming. The new Plex Arcade service lets you stream a collection of classic Atari games to your devices. More interestingly, you can also stream your collection of classic game ROMs. However, Plex Arcade won't be free—it's $5 per month for regular users and $3 per month for Plex Pass subscribers.

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