After 50+ dragons, it lags and crashes constantly. I now have around 500, so I did really hang in there. First, you can double click to harvest, but then they don't respond and you have to drag each one. Takes forever and they wake up before you've even finished round 1. Now, the game wont open due to connectivity problems but all other apps connect just fine. Timer only counts for sleeping dragons, not coins or mines etc. Terrible support or rather no response! Trying a different merge game now