Units

Units are the main damage dealers of your tower, you can have up to 8 of them at the same time on your tower.

Unit types
There are 5 different kinds of units :
 * Archers
 * Mages
 * Throwers
 * Summoners
 * Supporters (unofficial name)

A same unit can be of one or two kinds, for example a mage can also be a summoner. Only archers, mages and throwers deal actual damages. Summoners will summon one or more creatures when you use their ability. Supporters can increase various stats (e.g. damages, gold, experience, ...), for a period of time or for the entire battle.

Units
There are currently 32 available units. Most of them can be unlocked though tower upgrades, some can be unlocked by defeating bosses or castles on the map and some can be purchased for real money.