[Android] Free: Defense Zone 3 Ultra HD (Was $4.29) @ Google Play

Defense Zone 3 Ultra HD is free for a limited time. The comments at OzBargain seem to all be positive and 4.5 star based on 33.8K reviews at the Google Play store.

Welcome to the long-awaited sequel to the popular action/strategy game! New weapons, landscapes, and options galore! Every game session is now even more dynamic and amazing.

The core of the game is still the same: entire armies of enemies rush at your defenses, trying to destroy them by any means necessary. But now they’re even more powerful and madder than ever…

via nocure at OzBargain