The game was great except....
Level 9....The waves over lap each other to early and I cannot beat it. I have tried so many Dif combinations of what I buy w/wo upgrades and where they go.....I don't know why but it's just not happening. So I have to say the the upgrades are not coming quick enough for the Difficulty. Somethings missing at that point as far as balance and it's in the enemies favor. I love TD games to much to be missing something here but you did a good job though I never played the first this is near perfect.