PixlBit's Review of this XBLA game is not very glowing:
The visuals in Defenders of Ardania are pretty OK. And thus ends the discussion of the good things about Defenders of Ardania. Everything else about the game is frustrating, boring, and annoying. You’d be excused for being drawn in by the concept, though. Defenders of Ardania tries to grab some attention in the jam-packed tower defense genre by adding a few elements normally seen only in real time strategy games, but the implementation of these additions make the game a slog.