The crowd predicts a number — how many attempts, seconds, coins, kills — then the streamer does the thing and the host enters the real result. Closest guesses score most.
Predict the Streamer turns the audience into forecasters. Each round the streamer poses a numeric challenge question (How many attempts to clear this level? How many seconds for this speedrun?) and everyone submits their prediction on their phone. Once the streamer has done the thing, the host enters the actual result and points are awarded by closeness — an exact match earns 1000 points, guesses further away score proportionally less. After each reveal the leaderboard updates live on the broadcast overlay.
Feint is an independent host tool. Game names and rules belong to their designers and publishers. The links above point to official or canonical references.