Well, to be honest i don't know if this works online, but i played it last weekend and it was quite fun.
Here's how it goes: I describe a situation, you gotta find out what events lead up to the current situation by asking questions that can be answered with YES or NO.
Btw, whoever finds out has to post the next situation (and answer the questions, of course)
Example: A man lies on a field. Dead.
Q: Was he shot?
A: No
Q: Is he wearing a backpack?
A: Yes
Q: Did he jump out of a plane and his parachute didn't open?
A: Yes, you are correct, congrats.
Now, ok, this was fairly easy. It was actually the only one i found out last weekend
Situation: An alarm clock goes off, a man gets out of bed, switches on the light, listens to the news on the radio and kills himself.