Although a majority of PC players seem indifferent to their friends on Steam looking at which games they play, sometimes players want to play something in secret.
Maybe they want to play their favorite games without being interrupted, especially when it comes to getting notifications that their friend is playing a game.
It can be a bit annoying when you see someone launching the same game multiple times while you are doing something, or when you see a lot of friends online after launching the Steam application on their computer.
Valve allows you to pick and choose which notifications you receive.
You can disabling notifications on your Steam app.
Go to your computer and open the Steam app.
2. On the left side of the screen, click Friends, then click on View Friends List.
You can manage your friends list by clicking on the icon shaped like a gear.
4. Click Notifications on the left side of the screen.
5. The boxes next to the notifications you don't want to receive can be found on the Notifications page.