Nintendo shares surged in Japan on Monday on the hopes that its new app Pokemon Go would give the businesses’ mobile gaming division a big boost.

The company’s stock ended the day in Japan up over 24.5% following gains of almost 9% on Friday. The company has seen an increase of almost $7.5 billion in market value over the last two sessions, while on Monday volume was the highest since October of 2015.

An analyst in Tokyo said that the rally on Friday of Nintendo stock was due to the chart topping performance of the app in the United States, while the rally on Monday was about anticipating a strong launch of the app in Japan in the very near future.

The app launched July 6 and currently is available in the United States where it is dominating the list of free apps in the App Store and in New Zealand and Australia. The app is expected to launch soon in Japan.

Pokemon Go allows users to catch Pokemon characters through the use of augmented reality technology in the real-life surroundings of the gamer using the screens of their smartphones and to battle other characters.

While this game appeared to have been highly positive amongst its users, analysts’ views were more nuanced of what it would eventually mean for earnings at Nintendo.

An equity analyst for Morgan Stanley said that for the new Pokemon Go app to have any meaningful impact on the profits of Nintendo, the game had to hit a minimum of between 15 billion and 20 billion yen turnover monthly. That figure is between $140 million and $196 million.

Currently, Pokemon Go is available freely for download on Google Play and the App Store, but offers purchases in app for more items as well as power ups.

The analyst added that the daily turnover estimated for the Pokemon Go app on its first day was between $400 million and $500 million yen or $3.9 million and $4.9 million, so for Nintendo to have its earnings to seriously benefit from the app, it needed to consistently be at No. 1 in app store for sales.

The No. 2 app in June was Mobile Strike. It is estimated to have a monthly turnover of more than 10 billion yen after bringing in daily between 300 million and 400 million yen.