Middle session new specification: Zombie mayhem

At the middle of the session, you stand up, ask everyone to stop for a minute and introduce a new requirement:

The Zombie Mayhem

1. A zombie cell is a cell that dies after having been alive for three consecutive turns
2. After a cell dies because of the zombie cell rule this cell bites all of its neighbour alive cells on each turn
3. If a cell is bitten this cell dies and becomes a zombie cell

Funny times when

1. People are doing mute programming
2. You scream zombie mayhem, and then introduce the new rules
3. People are now allowed to talk so that they can express their feelings about the crazy change