Google loves to add Easter eggs to its services and software for users to discover. These are hidden features or mini-games that exist just for fun. The latest version of Android, dubbed Marshmallow, also contains an Easter egg for you to enjoy when you need to kill a little time.
Much like last year's version on Lollipop, the Easter egg is a Flappy Bird lookalike. This time, though, Google has added a multiplayer feature. Here's where to find it:

Step 1: Open the Settings menu and tap on About phone/tablet.
Step 2: Scroll down to Android version and keep tapping on it until you see a large "M" graphic load.
Step 3: Tap on the "M" logo to turn it into a Marshmallow.
Step 4: Press and hold on the Marshmallow until the game screen loads.
Step 5: Tap the "Play" button in the center of the screen to start the game.

You can use multiplayer mode to play with up to six friends by pressing the plus and minus icons at the top of the screen. The game is already difficult in single-player mode; with multiple Androids being controlled on the same screen, it's absolute madness.