virus
I don’t know why you think it’s a virus, if you don’t think it’s safe, just don’t download it. It’s just a simple game developed on Unity Engine.
You can throw it on any Virus checker website. Here’s from Virus Total
https://www.virustotal.com/gui/file/617687330cf21d021cb9da3447922f5ab400b1b59e4eda159e9b736606721668