Rolls
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The app
Hunch
Before you choose a color, say whether you think that choice will be right or wrong. A hidden roll then picks one color at random. When your sense matches the outcome, that tap is counted as Right or Wrong at the bottom of the page.
I sense this choice will be
Choose a color when you have a hunch.
A curve of the last 50 will appear here.
Guesses
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Play a few rounds, then see how you compare with chance.
FAQ
Why compare my score with 100 random players?
Hunch lets you sense that a choice will be right or that it will be wrong. Both of those can earn a point, so a raw total is hard to read on its own. A point means your sense matched the outcome: you said Right and the color you tapped came up, or you said Wrong and it did not.
Chance can collect the same kind of points by guessing. After each trial, one hundred control players take that random walk against the same roll. The curve beside the score is chance for the last 50 trials, with gold at your recent score.
How do I know the roll is not reacting to my guess?
Your worry is fair: with Math.random() at tap time, a skeptical player cannot tell whether the roll was already decided or reacted to their guess. The roll is chosen in your browser, not sent to a server, but that still happens when you tap.
The check we want is to lock the sequence before anyone plays: save a session code first, play against that frozen stream, then compare a log afterward. A decoded list of colors would also prove the computer did not cheat — if you do not look until later — but that kind of file does not mix with a shared sequence, because anyone who opened it would see every future roll.