Dokk OS is a popular video game that lets you ping nearby devices with the app open. The idea is to simulate the functionality of a device with a functioning OS to give the player a sense of what it's like to use a mobile phone or tablet. The player is presented with a screen that displays various controls and other elements used to control the game's operation.

The player can highlight nearby devices that are open and playing the game. The highlighted devices will open and play an animation until the screen is tapped three times quickly.