Is it a page with the Firefox logo on a weird server address (i.e., NOT mozilla.org)? That may be one of the advertising-driven malware sites that have been springing up lately. Definitely DO NOT download what they offer and cancel the download if given the opportunity.

What game is this appearing from?

If you could get a screen shot of the offending page, that might be helpful in case it has evolved into something new that forum volunteers haven't seen before. This article has tips on capturing screenshots: How do I create a screenshot of my problem? Please cut out or blur any sensitive information in the image before attaching it to your reply.

The game it always pops up on is Farmville 2. You were right. Look at this URL (I left the L off the html at the end in case this would cause you problems; better safe than sorry!!

https://queidwhoreslag.net7481670946741b012d9c71bb538f11eede6d0c8aef1c4.htm

heavenlyhost1 said

The game it always pops up on is Farmville 2. You were right. Look at this URL (I left the L off the html at the end in case this would cause you problems; better safe than sorry!!

Only the person who gets this can really load site link. This makes it harder to reproduce and also narrow down the offending ads doing this.