The "część1" suffix indicates it is the first part of a multi-part RAR archive. These are common in communities where file size limits or slow download speeds necessitate splitting a game into smaller segments.
Archives with generic names like "Pełna gra" are frequently flagged by security researchers as high-risk for malware or adware. Forensic investigations into pirated software often use such files as case studies for Trojan distribution.
Cybersecurity courses (e.g., Cyber Pathways ) use similar unofficial game files to teach reverse engineering and threat detection.