The main aim of this advanced turret defence warfare game is to prevent the enemy troops from reaching the northern part of the map. With 12 units, a complete storyline and over 50 waves this game will simply amaze you.Use the mouse and the keyboard to control this game. Some handy shortcuts: C (construction area) H (health on/off) M (mouse scroll) G (global zoom) spacebar (cancel turret construction) R (repair turret) S (sell turret).he commander sister is a real gem of a tower defense game with a great story line and with some of the most excellent game play ever. Many Battles and loads of turrets to choose.