Cryptokitties is bring Ethereum to the top difficulty, as this game is over used and generate a uncredible number of transactions into a single contract, but also because people always put higher a gas price.
I hope this mess will be fixed soon and that my transactions will finally pass after 12 hours waiting...
Be careful to not use ethereum at the moment until this scale bug is fix!
Bitcoin is also because of this making a uncredible pump!
With kitties, everything is possible...
Thank you for reading