Do you think you have quick reflexes? The Windows Phone game Naargh! may have something to say about that.
There's not much to the game but what's there is challenging and oddly addictive. Naargh! dares you to tap on all the red faces before times runs out.
It sounds simple but as the pace quickens, the game becomes painfully challenging. While Naargh! may make you yell "Aargh!" in frustration, the game has an addictive quality that pulls you back for more.