System Override: Louisville's Biggest Halloween Party

Louisville's biggest Halloween party returns to Fourth Street Live! on Saturday, October 31, 2026. This Halloween, Fourth Street Live! transforms into System Override: Reality Has Been Rewritten, a massive Halloween party where AI has rewritten the rules and nothing is quite what it seems. Explore 7 immersive themed venues throughout the district, enjoy live entertainment from Naked Karate Girls, and compete for your share of $5,000 in cash prizes during the costume contest. With multiple venues, entertainment, themed experiences, and thousands of Halloween partygoers, System Override is one of the biggest Halloween events in Louisville. Costumes are encouraged, but not required. Must be 21+ to attend. Saturday, October 31, 2026 | 7PMEarly Bird tickets are available now at the lowest price available. Buy early and save up to $15.