Plane Defender
"Plane Defender" is a tower defense game. This game is very simple, just click the map to build a tower. Each tower can be upgrade twice. After the upgrading, the tower will become more powerful.
There are 120 missions and more than 10 waves of enemy planes each mission. In order to avoid these plane to attack your base, you need build more towers to kill them. You can kill more planes and buildings to earn more money.