These files typically consist of small scripts (JSON) that, when placed in the Fightcade emulator folder, automatically fetch the correct game ROMs when you join a lobby.
If this is for Fightcade, only use reputable community links from the official Fightcade Reddit or Discord.
When searching for "rar" files with specific alphanumeric codes:
generally refers to a specific entry or video ID within the FC2 Video platform (often associated with adult content or independent video creators) or, in technical gaming circles, a specific version or component related to Fightcade 2 (FC2) emulator romsets.
If the code refers to an FC2 Video creator, the only safe and legal way to access the content is through the FC2 Marketplace.
If you are searching for this in the context of retro gaming, "FC2 0902" may be linked to specific or romsets used to play classic arcade games online.