Pokemon Go
The augmented reality mobile game "Pokemon Go" by Nintendo is shown on a smartphone screen in this photo illustration taken in Palm Springs, California U.S. July 11, 2016. Reuters/Sam Mircovich/Illustration

In just a few days, several people have been infected with the “Pokemon Go” fever. And it’s expected to continue for a while, as other countries continue to wait for the app’s arrival in their respective areas.

That hasn’t stopped “Pokemon Go” from securing a pretty high spot in the mobile gaming charts in U.S. history. Survey Monkey reported that it is now the biggest mobile game in U.S. history.

To gauge just how big it has become, “Pokemon Go” has sealed the deal within 24 hours. Within this time, the app has already beat out “Clash Royale and “Slither.io” to claim the title of biggest game of 2016.

In fact, based on the number of daily active users by the millions alone, it has also beat out two top-performing apps, “Candy Crush” and “Draw Something.” As of the report, “Pokemon Go” already has 21 million daily active users in the U.S. alone. This is compared to the peak U.S. audience users for King’s “Candy Crush” by a million.

If the comparison is not enough, “Pokemon Go” may be looking to overtake bigger apps like Snapchat and Google Maps based on its Android users. This is not entirely impossible, considering how the app had easily overtaken Twitter and Tinder in its first few days.

The next step for developer Niantic Labs may be to go into advertising. Speaking to Financial Times, Niantic CEO John Hanke confirmed that there may be sponsored locations included in the app. This suggests paid for locations to open up a new revenue channel apart from the current in-app purchases.

This is a pretty smart move, which is a good avenue to bring more sights to the game while enabling brands to get their name on “Pokemon Go.” This follows the format that Ingress took.

TechCrunch added that the system may use the same cost-per-visit approach when charging advertisers. Considering how “Pokemon Go” users are going everywhere to catch all possible Pokemon—even to the oddest places—it’s safe to say that drive to customers to a brand’s specific branch may be strong.

“Pokemon Go” just recently launched in Europe, with other areas in Asia set to follow. Australia and New Zealand were the first to enjoy the app’s launch.