I have about 50% crash rate during loading or playing. Yes, I know, RAM, reboot etc. But, come on, this is a game where you put blocks on top of other blocks! I really don't want to reboot my iPhone for such a game. And besides that, the loading time is ridiculous. Even Tetris loads faster than Tower Bloxx and you all know what that means:
The "pick up and play"-value is nearly zero, when I have to reboot my phone (1 minute as a minimum) and the game itself adds another 35 seconds before you can actually do something.
And don't forget to add to the crashing the non-saving nature of this game. Yes, Tower Bloxx fails at what is the number one rule for every iPhone game: Save your f*cking state! You will loose the currently running game state whenever you press the home button or the game crashs.
So, overall, Tower Bloxx is a nice game. But it does not integrate well into the platform. It uses to much RAM and does not save running games.