Cryptokitties is a viral collectible game. In the game you get to own virtual kittens and breed them once a week to create rare varieties. Since ownership of the kittens is secured by Ethereum blockchain it is possible to trade kittens between the players. The most expensive sale to date was one virtual kitty for 246.9 ETH, or roughly $117,000. It is also possible that the owner bought this kitten from themselves to hype up its value and bring media attention.
This is a companion discussion topic for the original entry at http://rados.io/cryptokitties-viral-blockchain-game-increased-fees/