What's the difference

What's the difference? There are four pictures for each question, One of them different, come to find out it! Game features. 1. Simple, fast-paced. 2. The most appropriate to pass the time. 3. Brainstorm, brain activation. 4. Cute style, the public image. 5. The young and old, healthy game. 6. Category rich, ever-changing. 7. The quiz is updated regularly.