I really love the BakeGyamon books. In BakeGyamon, the characters are gathered into a different world to become players in a big competition. They must play games and collect cards that have monsters in them that can be used to help them in the games. Each game in the series is based off a real life game only the games are played backwards. All the rules of the games are backwards. This is a really good action/adventure manga series.
The BakeGyamon series is made up of five books.