European Central Bank Launches On-Line Tetris
Popular game explains the security features built into the new 20 EURO banknote.
![](https://birdinflight.com/wp-content/uploads/2015/03/tetrisnotecover.jpg)
European Central Bank launched online tetris, designed to educate about security features built into new 20 EURO note, informs engadget.com. After removing line after line, players open a picture which is one of the security features – for example, a hologram. After the game is completed, the player will be able to see the full picture and information about how to check banknotes authenticity.