Back on the forums, there were two games like this: one where you could answer in full, and another where you answered just yes or no (you can elaborate a bit). This is the latter.
All you have to do is ask a question. Answer it yes or no, then ask a question of your own.
Example:
Person 1: Do you have an iPhone?
Person 2: No. Can you turn a cartwheel?
Person 3: Yes! Do you have any pets?
Easy, right?
I'll start.
Do you like chocolate?
All you have to do is ask a question. Answer it yes or no, then ask a question of your own.
Example:
Person 1: Do you have an iPhone?
Person 2: No. Can you turn a cartwheel?
Person 3: Yes! Do you have any pets?
Easy, right?
I'll start.
Do you like chocolate?