Beacome a master fighter and beat the game. once ur done their should be several extra features. for ignosaur beat saurhead in a 3 way match(i recommmend the others[below]to beat him easily).to get frigisaur, beat the BBs(rex vivian snivels) in a 3 awy seperate match.to get the"guh" brains go back to the teleporter find a blue machine bout the same size as the teleporter and talk to diggins. hell give u a mission to complete