The good news: Pokémon Go is getting gamers out into the real world; exploring neighborhoods; and making new friends.

The bad news: Players have stumbled onto a dead body; been robbed; and driven a car into a tree. Oh, and there’s that privacy issue…

Just one week after its release, Pokémon Go has torn up mobile app charts and has already beaten out some very established apps in terms of engagement. The addictive critter-collecting, augmented-reality app is also draining smartphone batteries at an alarming rate.

Fortunately, the game has a battery-saver mode explains Fortune’s Ewan Spence:

While this will still present you the full game when you are in the middle of a hunt or a taking part in a gym battle, when you are walking between points of interest the app will do its best to stop battery-intensive processes. It will dim the screen, it will reduce the number of calls it makes to the server, and you’ll get a handy alert or vibration when something happens.

Lifehacker also has some tips, including disabling background apps that stream music or are constantly checking in with their respective services for updates. But don’t use the power-saving features built into your mobile OS, they may have a negative effect on the game experience.