Recent reviews by Kozure Okami

The game is nice and entertaining as a pastime in between. At least at the beginning. The graphics are quite nice, but not great.
Unfortunately, the first 6 levels don't require much tactical work. A lot helps a lot. So level up the towers properly and then the rest will take care of itself. Perhaps the other levels will be more tactically challenging.
All in all, you can't complain for €10.
After playing through the campaign, you can practically forget about the additional levels. Unwinnable even on the easiest difficulty level. The final boss can never be defeated and is therefore no fun to play at all.
I therefore cannot recommend the game.