was the definitive patch that brought several "Quality of Life" improvements: Reduced Input Latency:
The ".rar" at the end of the file name refers to the file compression format used. RAR (Roshal ARchive) is a proprietary file format used for data compression and archiving. The file is compressed using RAR, which reduces its size and makes it easier to transfer and store. Capcom Fighting Collection -NSP--Update 1.0.2-.rar