VIBEATHON (VIBE-A-THON) is a 24-hour AI hackathon in Lisbon, Portugal, on June 4–5, 2026, at 42 Lisboa inside Unicorn Factory Lisbon, during NFC Summit 2026. It is built for founders, developers, designers, creatives, operators, students, and curious beginners who want to ship something real with AI. Organised by CoLab Lisbon.