How do I play hell of sand

Usually, there is a list of items you can use, to "be a god" and do what ever you will with the zombies. I call them The Villagers. What I usually do is spawn them, cover the sky in spout, and put some plants on the ground. Watch them grow, put a wax fuse next to a plant, and viola. You have a disaster waiting to crush the zombie rebellion! There is no "point" to playing this game, just freeform killling of zombies.