Hello there, this would absolutely be a simple set-up and it’s the kind of thing Bubble excels at in my opinion. Upon sign-up your users can set the tags they want and you can save this data on their profile. Then, once a question is asked by someone in the community, you can set-up a workflow like this: “notify all users who have [Game X] in their list of tags”.

I hope that helps, let me know if you want to know anything more specific :slightly_smiling_face: