Tower Defense:

Tower Defense: Game Mechanics

This game mechanic is a highly addictive and mentally rewarding genre to play. In fact, as you've seen in chapter 1 page 10 from BigFish Games, Tower Defense is over 40% of the games played internationally. The competition between production studios is severe as they meet head-to-head in this genre to survive. If you include all the sub-genres of Tower Defense — such as "Fighting", "Sports", "Platforms", "Racing/Flying", and "First Person Shooters" — then, in the US market alone, this genre rockets to 91% of all games played!

Phaser Game Starter Kit Collection on LeanPub.com: for more details and game rules.