Interesting.....

So we've played the Left4Dead demo to death (get it?)...... but little did we know that Valve still had the time to sneak a little Easter Egg in there. One that concerns a certain favourite game here at Good Delicious...

Kotaku reader Srider has found a curious advert on the back of a cereal box in L4D... it advertises some TF2 action figures, and urges you to "COLLECT ALL 10!".... Yes, that's 10, as in 9+1, as in there's a 10th class coming sometime :D

I wonder what it can be......