@Heed
Maybe you should work on the controlling of the Pikmin. Like moving them and such. Don't use guis though, maybe make an item or playertype so when you click, the pikmin will go to the spot, if possible, where you clicked. If impossiable, they'll go as far as they can to the spot. Like, if you click up on a mountain, the pikmin will just go to the base of it, and they'll stop.