Unity is what they are using, I just know from seeing it in the browser code and researched it a little last year. https://unity.com/solutions/build-backend. Source: over 1 year ago

I never said that Unreal is bad for non BRs, just that it is very good for BRs. The amount of work they put into making Fortnite work as well as it does puts it way above anything else for large match based shooters. I agree that Unity's old multiplayer code was an absolute mess, and I would have previously suggested using a third party solution. I was saying that I've heard good things about their new multiplayer... Source: about 2 years ago

Google is your friend my dude.. https://ourpact.com/ and https://adguard-dns.io/. Source: about 1 year ago

I think there are a few, usually working with a vpn. This one is oriented to families/groups: https://ourpact.com/. Source: over 1 year ago

There is a paid app called Our Pact that we used when my kids were younger. We don't use that anymore but did until they hit about 15 or so. It's really good; works on both android and ios. My kids have an Android phone (our old Samsungs) with limited data and unlimited calling/text. Source: about 2 years ago

Our pact. Paid service is better than the free one. Source: over 2 years ago