Unreal Tournament and Quake 2 for me.

It's also a game people play in person as well. It's the same as the Halo version except you tag each other instead of shooting. It's really fun to play in big open areas with large teams.

Yeah, but we have AI now, we don't need our blog posts to over explain or state what it all means to general audiences. The author name-drops a bunch of CTF events hosted by a variety of independent organizations and name-drops well-known teams.

To help everyone, this Capture The Flag is specifically Cybersecurity adjacent, there is a Wikipedia article on it as the top Google search result for me when searching "CTF". This is why the acronym is used, because searching for the full will get you to the wrong "sport" vs the cybersecurity one.

I don't want to explain what a CTF is. look at the Wikipedia article. It is there for a good reason.