Running a file inside could encrypt your data or steal login credentials.
Senders often claim it is a "new indie game," a "beta test," or a "portfolio project" to trick users into running the code. Risks of Opening Unknown .RAR Files File: Tenta_Shooter_Game.rar ...
You can upload suspicious files to VirusTotal to see if multiple antivirus engines flag it as a threat. Running a file inside could encrypt your data