Pokemon Go, the newly launched mobile game in which players catch Pokemon in the real world, is not made by Nintendo, but the company is still benefiting from its release.

As Reuters noticed, Nintendo shares surged significantly this week after the game’s launch. At press time, shares are up close to 9 percent on the Tokyo Stock Exchange. At one point, Nintendo’s share price jumped 10 percent, which represented their highest level in two months.

According to tracking service App Annie, Pokemon Go is currently the No. 1 free app on iTunes’ free and highest-grossing charts. Though the game is free, it has microtransactions, and those are apparently proving popular, it seems.

Pokemon Go was developed by Google spinoff Niantic Labs, in collaboration with The Pokemon Company. Nintendo is a co-owner of The Pokemon Company.

In other news about Pokemon Go, a man recently caught a Pidgey while his wife was preparing to give birth. Additionally, police in Australia gave some good advice to players.

It hasn’t been totally smooth sailing for Pokemon Go, however. Niantic Labs has acknowledged a number of issues with the game, while players are also reporting heavy battery drain. Check out this post to see a roundup of the game’s known issues.

For more on Pokemon Go, check out GameSpot’s roundup of everything you need to know. Keep checking back with GameSpot for more on Pokemon Go in the days ahead.