Ancient Frog has dropped off the App Store front page. When it appeared there a week ago, I saw a roughly 10-fold increase in daily sales. It will be interesting to see what the long-term effects of that boost are. Will it drop straight back down again, or will word-of-mouth have given it some traction?

I suspect (hope!) that UK sales (currently around 1/4 of total sales) will take longer to die back down. It's #21 in games, #5 in puzzle games, #3 in family games there - so it should keep popping up in front of people as they browse around on the device.