Mattel Uno Championship Series Tournament 2026 (ends 9/27) – Mattel Uno Championship Series Tournament 2026 offers a Grand Prize and a Finalist Trip Prize and closes on September 26, 2026, at 4:59 PM PT. - Finalist Trip Prize (up to seven finalists): each finalist receives round‑trip coach airfare to Los Angeles, CA (or ground transportati

Mattel Uno Championship Series Tournament 2026 offers a Grand Prize and a Finalist Trip Prize and closes on September 2… Ends Sep 27, 2026.