Shockwave's Spire
Following ToF and MEM, Shockwave's Spire is Rovio's third ultra-greedy "Wins when it wants you to" moneymaker. Share your tips and see if Rovio likes you or not here.
For example:
Today Rovio was nice to me and I got to floor 10, and then I exited there. Yesterday was about the same except I was taking a risk and went for floor 11, and I made it!