The annual 3-day festival known as Nerdapalooza returns to the Orange County Convention Center the weekend of October 18-20.

Nerdapalooza is an annual nerd culture arts and music festival, the first of its kind to invite all genres of the nerd music movement under one roof, including nerd rock, nerdcore hip hop, chiptunes, and video game music.

Headlining the musical portion of the event are bands like They Might Be Giants, Nerf Herder, Green Jelly, and Marc with a C. The festival features more than 40 bands over three days, as well as an indie game showcase, vendors and visual artists.

Friday is a free day at the event – it costs nothing to go and check it out. Saturday and Sunday daily passes are $40 each, or you can get a weekend pass for $70. Tickets are available online.