Impressive!
Before I start this review I have to say WHY THE HELL DID YOU RELEASE THE GAME IF IT WASN'T FINISHED?! Seriously, I would have played this for hours and hours but I completed everything that was already available to complete! Now I know you're updating it and everything, and that would be fine if it was just extra content (like the different modes and such), but the game itself should be done beofre you release it! You're not the first to do this, but it just bugs me whenever I see it.
As for the game, it's great. I saw Pokemon Tower Defense and thought to myself "Ugh, this is just gonna be some generic tower defence game with Pokemon characters slapped onto it for no reason other than to grab people's attentions." But you actually retained the Pokemon atmosphere. So good job in doing that!
Also, this is one of the more unique tower defense games that I've played. I mean, it's no Plants vs. Zombies or anything, but at least it was a little less basic than fight guys off, if they pass you, you lose life, ect. And you also get the ability to move stuff around after you place it, which REALLY helps. Had you not been able to do that, the whole game would have fucked up because of it, but you made the right choice.
One thing that I would suggest is having a stadium mode or something where you just fight a lot of enimes without consequence, just because there`s a bit of grinding involved. The only level sort of like that is Route 3, but hell, that`s currently the last level on the game! (Not to mention that`s kind a weird place to end instead of a gym but I digress) Just an idea.
Keep up the good work, look forward to finishing it!