Enter both names and hit start — there's no peeking at the board first.
On your turn you get one flip. Guess right and you go again right away. Guess wrong, or let the clock hit 0, and the turn passes to your opponent.
A correct flip moves your belt toward the 🏁 finish. A wrong flip (or doing nothing for 20s) slides it back toward the ☠ fall-off edge — but you're still hunting for the same image until you find it. Reach the finish first to win; fall off the back and you lose.