OGN E-sports Stadium is one of the best places you can watch e-sports in Seoul. It’s has the feel of a sports stadium, with locker rooms and separate entrances for the different teams (presumably so they don’t get into any prematch scuffles). The players have soundproof booths, and there are both Korean and English sports casters. For the post season and championship matches, the stadium will be packed, and tickets should be reserved in advance.
* You can purchase a ticket via http://www.ticketlink.co.kr/global/en/main.