When you were young you surely played at staring at a friend and trying not to laugh. The modern version of this pastime is called Flinch and it's as addictive as ever.
Stare without laughing.
How does it work?
What makes this game so interesting is that you won't need anything else than your phone, as your rivals will be other users connected to the application over the Internet (although you can also play against friends).
The gameplay is quite simple: you have to stare at each other through your phone's camera, and the first one to laugh, loses. The referee will be the app itself thanks to its own emotional analysis technology. If you want to distract your rival, you'll be able to keep some tricks up your sleeve.