Stack balls on the outcomes you think are likely, that's your probability distribution, then drop reality and let an honest scoring rule grade your confidence.
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How to play
At the bottom of a peg-drop board sit outcome bins. Move your fixed budget of balls onto the bins to express how likely you think each outcome is, taller stacks mean more confidence. Lock in and a ball falls into the bin reality chose. A proper scoring rule grades you, rewarding calibration over reckless all-in bets, and your prior is nudged toward what happened to seed the next round.
Your ball stacks are a literal probability distribution.
Choose between a log score and a Brier score.
Bet closer to the truth, don't gamble, over-confidence is punished.
Controls
Desktop: click a bin or its + / − buttons to stack balls, then Drop reality.
Phone & tablet: tap a bin and the +/− controls, fully touch-friendly.
Game modes
Log score or Brier score, each in Daily (shared) or Practice (random).
Tips & strategy
Never empty a bin completely, a zero stack on a true outcome is heavily penalized.
Spread your balls to match your real uncertainty rather than piling onto one guess.
What you'll learn
Plinko Mind is a calibration game built on proper scoring rules, turning a peg-drop board into a tool for honest probability estimates.
Skills: calibration, probability estimates, proper scoring rules
Best for: roughly grades 9–12 (ages 14+)
For parents & teachers: learning to say how sure you really are.
About Plinko Mind
Plinko Mind is a calibration game built on proper scoring rules, turning a peg-drop board into a tool for honest probability betting. It's an original free browser game made for PlayPendium.
A free, original browser game on PlayPendium. No download, no install.
