Temple Run 2 logo

I don’t think I could give away 20 copies of a game I made, and yet people downloaded Temple Run 2 20 million times since its Thursday launch.

That is a huge start for the sequel to one of smartphone gaming’s biggest hits.

Temple Run 2, an endless-running game available now on iOS and soon on Android, is a free download on the App Store. Of course, that lack of a price tag hasn’t stopped it from reaching the third spot on the market’s highest-grossing apps list thanks to in-game item sales.

“The response from fans has been overwhelming,” Imangi cofounder Keith Shepherd said in a statement. “We are thrilled players want more of the Temple Run universe, and we hope to grow and expand the game over the coming months.”

Users have logged over 210 million gaming sessions in Temple Run 2 so far. The developer points out that gamers have spent a combined 1,775 years playing it.

Gamers downloaded the original Temple Run over 170 million times across Apple’s App Store, Google’s Play Market, and Amazon’s Appstore. The 20 million number for Temple Run 2 only represents the four-day total on iOS. Imangi will release the Andoid version later this week.