Decoding the Filename: "SONIC-MANIA-PLUS-USA-EUROPE-XCI-ROMSLAB.rar"
: This refers to a file format used for Switch game backups. XCI files are often used to distribute Switch game ROMs. They are essentially Nintendo Switch game cartridges ripped to a digital format. SONIC-MANIA-PLUS-USA-EUROPE-XCI-ROMSLAB.rar