A Bunch of us played some awesome marble blast ultra today. We made up a version of infection that's a blast to play. The way it works is one person starts infected. And they go and pick up one jewel so that it indicates they are infected. They way the player infects someone is by bumping into the other player. Or if a player acadently hits a jewel. Last person standing picks the next zombie. Its alot of fun so I made a video of it. http://ca.youtube.com/watch?v=DzXmujRLaLc