Quoted from Purpledrilmonkey:I think a 'find the Arkenstone' mode would be neat... Everything goes dark except one shot lights for say, 100k, and every wrong switch hit and every time you fire a flipper subtracts 5k points and slowly wakes Smaug up due to all the noise. Smaug waking up would obviously do some new mode phase like a hurry up or something that would be more difficult but more lucrative with a roving or possibly unknown shot being the collect.
Gives a risk/reward for intentionally waking him up. That and you'd get to see the scene in the mountain where he wakes up
That's one helluva idea you got there.