The player controls a llama which is positioned at the bottom of the screen and spiders descend into the play area from on high using threads, breaking them and dropping to the ground before mutating and mounting a crawling attack. The llama's primary weapon is it's own spittle (presumably the augmentation of the beast applies to bodily fluids as well) which is fired up at a 45 degree angle from horizontal in the direction the beast is facing, before ricocheting off one side of the play area, the otherwise useless planar shield high above the llama's head and then the other side of the play area before slamming into the ground and stopping. Since that shield can also be positioned vertically with the joystick, the player can use it and the llama's horizontal position to change how the spit moves around the screen and in turn aim at attackers or their threads pretty much anywhere.