Indoor Soccer in Mississauga: Year-Round Play, Training & Fun at KS Soccerplex Indoor soccer has seen rapid growth in Mississauga over the past few years. With unpredictable weather and increasing demand for year-round sports facilities, families and players often prefer an indoor venue where training, leagues, and recreational matches can continue without interruption. Among these facilities, KS Soccerplex has emerged as a reliable and well-managed option for players of all age groups.