Cannon: A normal everyday cannon that shoots any ground units.
Archer Tower: A tower that does less damage than the cannon but attacks air and ground units.
Mortar: Does more damage than the cannon and also attacks ground units.
Air Defense: Tower that does the most damage to air units but can only attack air units.
Wizard Tower: Tower with a wizard on top. Does splash damage to air and ground units.
X-Bow: Crossbow that shoots either only ground but is very accurate or air and ground units but less accurately. Needs dark elixir to recharge.
Inferno Tower: The most powerfull building of the game. Shoots lasers of fire at multiple targets and does more damage every second that it is attacking in a row. Needs dark elixir to recharge.
Newest Update:
Sweeper: Pushes any air units away that are in the path you put.
