The only flaw in this game is that the zoom feature in your browser makes it possible to get ridiculously high scores.
Sorry for the double comment. :(
A fundamentally flawed tower defense game because, as TheGhostGamer said earlier, there is no HP which means that basic towers can be built up in large numbers to win. Rating: 2/5 Poor Monkeys Tortured Playing this game: 124
The improvements made from BT1 have made it a lot better, although my only criticism would be that it doesn't take very long to get maximum ships size. 4/5