Hi Satoru,
Here is the Bitdefender message :
The application ....\Avencolony.exe was detected as potentially malicious
Active Threat Control blocked this process based on the following actions : - The application's behavior can harm your computer
I have been using Bitdefender for many years now without any troubles. Amazingly, after installing the game on my HD, this one considered avencolony.exe as a potential threat. I am pretty confused with this but maybe you can have a check.
Thank a lot and best regards, this game looks great