Because it is a .zip archive, you should exercise caution before opening it if you did not download it from a trusted source.
: Verify if the download link matches a known developer's page (e.g., developer-name.itch.io ). File: In.Nightmare.zip ...
: Before extracting, upload the file to VirusTotal to check it against dozens of antivirus engines. Because it is a
: Zip files are a common delivery method for malware. If you received this file via an unsolicited email or a suspicious link, it may be a "trojan" designed to look like a game. Safety Checklist : Zip files are a common delivery method for malware
: Indie game developers often use this naming convention for early builds or "game jam" entries.
: If you run the file and your computer begins to slow down or shows unexpected pop-ups, disconnect from the internet immediately and run a full system scan.