No Game No Life is a fantasyish anime, with some degrees of comedy thrown in, with much of the comedy being really perverted.
The anime itself though is excellent, with the main characters being very intriguing and the story being a lot of fun. The entire anime is filled with standout moments that you'll remember and rewatch for a long time. Like Sword Art Online, you'll appreciate it even more if you play a lot of MMOs, but it can be watched even otherwise perfectly well. The biggest problem with it though is that it's only 12 episodes long and ends on a massive cliffhanger with no second season in sight for awhile