Garden Defense Birdsong Woods 3 (Normal)

Garden Defense, a tower defense game from iWin; it's an old game, it was released way back in 2007, but I still like to play it now & then. This is the last level & the most difficult one. This is the normal mode, I didn't bother recording a very hard mode, it would probably take too long. I'm still hoping for a sequel even though several years has already passed :-)