With all the visualization in CTFd you'll know what's going on with just a glance.
All you need to use to run your very own Capture The Flag is a web browser. Just use the built in administration panel and say goodbye to database queries.
With the Import/Export feature, you can save your CTF and reuse all your hard work.
With its HTML editor, you can create entire pages inside of CTFd. Need to share lots of links? Make an FAQ? A contact page? No problem.
Hacking is hard work. If your users are stuck you can setup hints for them to get unstuck.
No clutter makes the default theme of CTFd a beauty without being opinionated.