The music festival, founded in 2006 by Taiwan Rock Alliance, was co-organized from 2010 to 2012 by The Wall, a live house owned by Freddy Lim and based in Taipei, with branches in Yilan and Kaohsiung.

[1][2] The festival was planned with fans of rock music located in southern Taiwan in mind and has traditionally taken place in March,[3][4] but has been held in other months throughout the year.

[5] Over time, Megaport grew in size and came to dominate the southern Taiwan music scene, no longer considered an "offshoot" of the older Formoz Festival.

[9] The originally scheduled twelfth iteration of Megaport was cancelled in 2019, as the mayoral administration of Han Kuo-yu sought information on financing for the eleven previous festivals.

[14][15] Megaport has featured many Taiwanese musicians, including Deserts Chang, Elephant Gym, 9m88, Fire EX., Enno Cheng, Huang Fei, 1976, and Sunset Rollercoaster[16][17] as well as international groups, such as 65daysofstatic and Grizzly Bear.