Given the fact the game is infused with tons of ads it is frustrating to have to play the same level 2, 3, some times 4 times before moving to the next level. The ads play then the game shuts down, reboots itself back to the level just completed. Also what happens after level 13 in building? I have close to $1.5 in money with nothing to build. Tired of seeing coming soon. The only thing to do is play 30 levels of small lots to play one challenging level. Play a couple of levels to pass time now