Kouchuu Ouja Mushiking: Greatest Champion e no Michi

Kōchū Ōja Mushiking, known outside Japan as Mushiking: The King of Beetles or Mushiking: Battle of the Beetles, is a 2003 collectible card video game developed and published by Sega for arcades. The game involves battles between cards describing various species of beetles. The cards can be scanned in by a Mushiking arcade machine, which will both carry out battles and dispense new cards. It is the second trading card arcade by Sega following World Club Champion Football. As of 2008, more than 100,000 tournaments have been held, and 20 million cards have shipped. The game has made it into the Guinness World Records with the highest numbers of tournaments held for an arcade game.