Depending on what "Sea of Choros" refers to, your next steps might include:
: If you aren't sure about the file, upload it to VirusTotal to scan it with dozens of antivirus engines.
: Look for a README.txt or INSTALL.txt file inside the zip before moving any files; these often contain specific version requirements or setup steps. 2. Extraction Process
: Right-click the file and select Extract All... . Choose a destination folder and click Extract .