TapDefense

Owning and outfitting an iDevice can be expensive.  Luckily, the creative team at TapJoy have offered up their latest title for free.  Build and upgrade towers to destroy roving enemies as they storm out of the gates of hell and attempt to infiltrate heaven.  This is TapDefense.

I downloaded this classic tower defense for my iPhone.  TapDefense does nothing to reinvent the genre, but they have executed the basics of the game type to make it very satisfying.  There are some towers that cause an earthquake when you shake the phone, but its really just easier to use the standard towers.  Players can choose different maps, game modes, and level packs. 

The touch controls are easy to understand and responsive.  The menus are simple to access and the ability to pause game play in order to research and build helps to remove the sense of panic when starting to lose control.  I found that I had to keep constantly touching the screen.  While watching a trail of enemies attack, the screen would begin to dim and then go to sleep.  Constantly unlocking the phone and restarting the level gets annoying really fast.

I recommend this game if for no other reason than the fact that its completely free.  Its not the best tower defense game I've ever come across, but it works well and is a great way to pass the time.