Hey there!
About the virus warning (Windows Defender false positive): I had the same issue with Windows Defender flagging the ZIP as Trojan:Win32/Vigorf.A.
I did a full check using VirusTotal (only 2/63 engines flagged it), Process Explorer and Resource Monitor (Sysinternals). I tested the game both offline and online and didn’t observe any suspicious network activity. The game behaves like a normal RPG Maker executable.
This looks like a heuristic false positive, which is quite common with RPG Maker games. I’ve played it on my system without issues. If you’re cautious, you can also try launching it offline first.
Of course, zero risk doesn’t exist, so everyone should decide for themselves, but based on what I’ve seen, everything seems fine. Just wanted to reassure people who might be worried