Facebook football: How to play the new secret game hidden in Facebook Messenger - VIDEO
It follows the release of a similar basketball game on the service, which was played more than one billion times in three months.
David Marcus, who leads the Messenger department at Facebook, wrote: "Our little [basketball emoji] Messenger game we launched for March Madness and the NBA season was played over 1 billion times (!) over the course of the last 3 months.
“Since you loved it so much, and it`s the Euro 2016 & Copa America... You get where I`m going... [football emojis]! It`s on!”
Here’s how to play:
1. Make sure your smartphone is updated to the latest version of Messenger
2. Select the football emoji and send it to a friend
3. Tap the icon in the chat