I downloaded it earlier and played it for a short time to understand the game. It's been about 5 hours since then and I came back to my computer only to find the file gone. Like, completely. It wasn't where I put it anymore. I checked the recycle bin to see if it was moved there, but nope. It's just gone.
Tried downloading it again and Windows is saying its a virus, so I guess the system just erased it without me knowing.