Imangi Studios' Temple Run has been downloaded more than 36 million times since launching in August of 2011, according to Gamasutra. Some of that increase in downloads can be attributed to a couple of things. The first is the last five months of switching from a pay title to free-to-play game. The company also claims that the game has 7 million daily active users at present.
The other significant thing happened last week when Apple started removing clones of popular games. While the game was pretty popular a month ago, it managed to see an estimated 16 million downloads in one month's time.
Recently developer Imangi told Gamasutra that making Temple Run free-to-play in September was a great idea because it immediately increased the game's revenues by five times thanks mostly due to in-game purchases. The next step for the iOS running game is a version for Android devices, though when they plan on releasing it is unknown at this time.