Features much of both.
Guns and Robots developer MastHead Studios did not draw the name from a hat - that kind of clear-cut, honest title conveys a sense of goofiness that is very welcome in the gaming market. And goofy it is. It's a wild west gunslinger game where you build your own custom-made robot in a garage (such as in the video above), and it's kind of appealing in a Need For Speed/Team Fortress kind of way.
When it launches, it will be free to play, but for now, you'll have to sign up for the beta.
Julian "Mirai" Williams