Buy and merge towers to stop the enemy attack. Improve your towers, use bonuses. Defeat all waves of enemies and bosses. Merge turrets to increase your power! - More than 100 kinds of cannons that you can use and combine - 4 types of enemies (stickmen, zombies, aliens, orcs). New types of enemies are included - Different bosses in levels - Several improvements to the towers that you can upgrade - Fire bonuses during combat - Daily rewards - World Player Rankings Organize your defence so that no invader gets through!