What happened: Participants register for clue alerts in the Houston Texans mobile app to track down the physical markers across the metro area. Fans who locate a sign scan it on site to claim a prize.

Why it matters: The local fan-engagement campaign arrives with the Texans at 2-5 and 13th in the conference standings after a 27-21 loss on Oct. 25.

What to watch: Clue distribution begins when the promotion opens on Nov. 1.