The rules are simple, one person gives an effect, the people with the next 5 posts gives a cause.
The 5th player to post a cause posts the next effect.

For example:

One person could say a crop circle was spotted

another person could say a UFO came down and made it.

someone else could say that some people were pulling a prank.

And so on...

*Remember! Only go 5 posts till the next effect is posted.
So it's 1 post (effect), 5 posts (causes)

Here's the the first effect:

A house was destroyed because: