LinkedIn has shown its whimsical side with a new app that lets you play Tetris with pictures of people in your network.

According to Mashable, the game called DropIn, the game mimics Tetris, but uses head shots instead of blocks.

Matthew Shoup, the site’s technical marketing manager, said he created the app to celebrate Tetris’ 27th birthday. He said he also wanted to showcase how easy it is to implement the LinkedIn Platform Javascript API.

The app also integrates your contacts’ latest updates. “DropIn takes the classic Tetris experience to a professional level,” Shoup writes. “Rotate and stack your LinkedIn connections’ faces, while discovering the fresh content they’re sharing online”.

LinkedIn isn’t alone in seeing the social networking potential in Tetris. The game was recently celebrated in an app for backpack maker Eastpak that did the same thing DropIn does, only with Facebook friends.