E-sports took a step into the sporting mainstream on Thursday as it made its debut at the Southeast Asian Games, becoming a medal event for the first time at an Olympic-recognised multi-sport competition.As the typhoon-hit Games, spread across dozens of venues in the northern Philippines, neared the halfway stage, e-sports made its grand entrance at a darkened arena in Manila.It represents progress for video gaming, which was a demonstration sport at last year's Asian Games but has been