A very good anime about a pair of siblings who are stuck in a whole world where everything is decided by games.
This anime.... wow. Honestly, when I first watched it, I thought it would be something like Sword art online, which I don't really like (sorry for all the fans) but I was wrong. This anime is very different from anything I've seen before.
The story itself is very unique, the characters are fun. I love every one of them. And then the art. I absolutely love the art. It's so colorful and happy. It will get you cheered up in no-time.
Overall I give this anime a 8. I really enjoyed it.