In general, .zip files themselves are not executable, but they often act as containers for malicious software.
: Before opening any such file, experts recommend uploading the download URL or the file itself to VirusTotal for a multi-engine security scan. SimAirport on Steam
: Scammers may use encrypted or very large zip files to bypass antivirus scanners.
: Unofficial "free" downloads of paid games frequently contain Trojans, spyware, or "try my game" scams that can compromise your personal data.