Tower defense games

Tower Defense (TD) is a subgenre of a strategy video game. In Tower Defense gameplayers have to protect their base, territory or possessions by building defensive structures and by killing the oncoming waves of the enemy. The games of Tower Defense usually contain different types of defensive structures that have different powers, strengths and weaknesses. Strategic placement of the defense tower is very important to succeed and win in a tower defense game. With its boom in 07-08, Tower Defense games became popular amongst more casual audience, as games of this subgenre where introduced to mobile players. Improvements of the graphical presentation and more experimentation with the gameplay mechanics increased the popularity of Tower Defense games even more.