IF you have downloaded the version on itch.io and nothing else, there should be no harm. Some Antivirus programs come in "grandma mode", which will warn whenever the user encounters anything that could potentially be dangerous- so about 90% of common file types.
HOWEVER there is a VERY slim possibility that some form of Malware which is already on your PC is attempting to "piggyback" on the 7zip unpacker or the VotV app in order to gain elevated permissions. But unless you've been clicking on every porn ad and toolbar download link out there, this is highly unlikely.