My kids play roblox sometimes. They also played minecraft, usually solo. We tried minecraft online on the reddit server but of course everybody started swearing...Question for other parent monkeys... my 12 year old son seems interested in Roblox and Discord. I don't know much about them, and did a bit of "my own research", but didn't find anything particularly worrying. They're both opportunities to interact with other people online.
talked to him about being safe (never tell anyone where you live or where you're going to be at any given time, and don't even think of buying anything - your mom and I will notice it on our credit cards!). We also talked about hate speech and misogyny - that people don't have filters when they interact online, so it can be tempting to jump in or pile on, but that they can still have real, severe and lasting impacts on people, so don't be a dick.
But beyond that, I'm not sure what more I can do. I guess continue monitoring and encouraging discussion... Are there any particular issues with those sites? He hasn't really ever been active with online multiplayer games (he has Minecraft, but doesn't play with other people), so I don't know how savvy he is wrt the pitfalls of the cybersphere...
As for roblox, they play with the chat off and there's no voice chat so it's pretty easy for them to just goof around. I started hovering but never saw a negative interaction so I wasn't worried. She would facetime with a friend while they would play, and honestly the friend was a bigger shitbag than anybody else. I think Discord can be limited to the friends that are in the channel, so that should be appropriate to their age. Keep an eye on them for a while and see the interactions, then go from there. I've been very satisfied with the safety on roblox as I started with the same concerns.
They also play fall guys which is fun.