If you are asking about the game itself, here is a quick summary:
Are you having the file on a modified console? If you are asking about the game itself,
This file will not work on a standard PS4. It requires a console running specific custom firmware (usually version 9.00 or lower). If you are asking about the game itself,
Downloading .rar files from unofficial sources carries a high risk of malware or "bricks" for your console. If you are asking about the game itself,
It is considered one of the better "indie" beat 'em ups available on the platform.