This is different
So you get a giant beast with a fortress on it. The beast walks at a steady rate toward a well guarded gate. You get to choose your fortress (as you progress between levels), choose your weapons, and click the enemies as you see them.
The first levels are pretty basic and involve a lot of you manually clicking each enemy, but later levels you can upgrade your weapons to automatically fire (at that weapons specific targeting settings). Takes time to beat as one load out will not beat every level and different challenges for time or kills force you to change your strategy. Example: If you need X amount of kills, don't smash the houses before all the enemy soldiers come out.