I love a good TD, and I've seen quite a few good German ones, (Like Shopping Maul), I'll give this one a look.
EDIT: Ok, I've played this TD quite a bit today and I've got to say I enjoy it quite a bit, here's my review:
+------------------------------------------------------------------------------------------------------------------+
Pros:
+ Unique Races ~ These races aren't copied from other TD's, nor do any of them resemble each other.
+ Multiple Game Modes ~ The different amount of games modes makes for high replayability.
+ Challenging ~ I have been playing on Normal and Easy, I honestly can't see how anyone could beat it on Hard or higher.
+------------------------------------------------------------------------------------------------------------------+
Cons:
- Challenging ~ Maybe it's a little too hard.
- The intro ~ Get rid of that annoying wild west song; if it was annoying on de_westwood then it's annoying here too.
- Intro length ~ I found that pressing escape cancels the intro sequence, but you still have to wait ten seconds or so before the game options appear.
+------------------------------------------------------------------------------------------------------------------+
Will play it some more later, haven't tried all the races yet, just most of them.