There doesn't seem to be a legit sunshinethegame.com
Sunshine, the app, appears to be a "self-hosted" game streaming platform, which suggests it is running locally, and is reported to be self-signed which typically gets a warning from worried software. I see no references to sunshinethegame.
Avast remains on the "legit" list though they got into trouble for selling subscriber information or some such. Windows Defender + Malwarebytes seems to be the top rated solution. If you can, shut off Javascript in your browser for as many pages as possible.