Steg has to look after his family of T'yungunz. To do this he must feed them. You control Steg by making him slither around the walls. He can go up down and around. He can even stick upside down to a wall. Steg can also blow bubbles. It is by doing this that he captures the grubs which he needs to feed his family. To catch a grub, Steg must blow a bubble such that it envelopes a grub, The bubble then drifts up and this is when the problems occur.