This year’s “game changer” burger series at Burger Lounge begins Oct. 1 with grass-fed bison patties served with bleu cheese, pickled onions and garlic aioli. The seasonal lineup changes every two months, continuing with wild boar burgers offered throughout December and January, followed by grass-fed elk burgers appearing on the menu during the months of February and March. The locally-based company has seven locations in San Diego, including one in the Gaslamp District at 528 Fifth Ave., and another in Little Italy at 1608 India St.