From the why is this a thing department:

After Angry Birds earned more than $300 million at the box office, it was only a matter of time before other studios decided to jump on the bandwagon to adapt mobile phone games. The next one? Fruit Ninja.

The game that has over 1 billion downloads will be adapted into a live-action family comedy. Sharpen your swords and break out the pineapple and watermelon. Ahead of this weekend’s release of The Angry Birds Movie comes news of another mobile game app getting the feature film treatment: Fruit Ninja.

via ‘Fruit Ninja’ Movie in the Works (Exclusive) | Hollywood Reporter