The "MW" typically stands for Most Wanted , referring to the 2005 racing game. "BRSTER" likely refers to a specific repacker or a versioning tag used in the piracy or abandonware community. Security Concerns
Upload the .rar file to VirusTotal to check it against multiple antivirus engines. BRSTER162-MW.rar
Downloading and extracting files with these naming schemes from untrusted sites like SteamUnlocked or certain Reddit-linked repositories has been flagged by the security community. The "MW" typically stands for Most Wanted ,