What are some alternatives?
When comparing Bloons TD and Bejeweled Blitz, you can also consider the following products
Fieldrunners - Fieldrunners is a game developed by Subatomic Studios, for Steam/PC, iPhone/iPod Touch, iPad...
Kingdom Rush - Epic game of tower defense available across multiple platforms.
Towers of Oz - Towers of Oz for iPad, iPhone, Android, Mac & PC! Battle wooden soldiers, saber-toothed tigers and giant frogs in tactical battles as you defend the Land of Oz from the Dwarf King!!
TowerMadness - Tower Madness is an epic 3D tower defense game for iOS.
Candy Crush Saga - Join Tiffi and Mr. Toffee in their sweet adventure through the wonderful Candy Kingdom. Switch and match your way through hundreds of levels in this delicious puzzle adventure.
Tower Duel - Tower Duel is a Multiplayer Tower Defense Game for iOS and Android.