Another fun game:

One person makes a Bowie-related statement about the person below them, and then someone posts and confirms/rejects this statement, and makes another one about whomsoever posts beneath them.

Eg;
Person 1: The person below me's favourite Bowie album is "Hunky Dory"
Person 2: No. The person below me likes Angie more than Iman
Person 3: Yes! The person below me hates the "Halloween Jack" persona

Etc.
And no posting below yourself