Odds Market

You're the one setting the line. Quote a payout on each event — price it fair and you survive; misprice it and the bookie pounces.

How to play

Each round shows a random chance event (dice sums, coin runs, card draws). Set your decimal payout before the bookie reveals the true probability. The fair line is one divided by the real chance. Quote too high and the bookie lays your bet; too low and it backs it — either way a misprice gives the house an edge that drains your bankroll. Survive the round with money left.

• Decimal payout means a winning $1 bet returns that many dollars.
• Pricing within about 2% of fair counts as a clean line and boosts your score.
• Run out of bankroll and you're wiped out.

Controls

• Desktop: drag the payout slider, then click to set the line and run the event.
• Phone & tablet: drag the slider and tap the button — fully touch-friendly.

Game modes

• Easy, Medium and Hard difficulty, each available in Daily (shared) or Practice (random).

Tips & strategy

• Work out the true probability first, then quote payout ≈ 1 ÷ probability.
• When unsure, price slightly conservative — a small misprice is cheaper than a wild one.

What you'll learn

Odds Market teaches fair odds and house edge by putting you on the bookmaker's side of the bet.

• Skills: probability, fair odds, expected value, house edge
• Best for: roughly grades 8–12 (ages 13+)
• For parents & teachers: fair odds and why the house wins.

About Odds Market

Odds Market is a probability-pricing game that teaches fair odds and house edge by putting you on the bookmaker's side of the table. It's an original free browser game built for PlayPendium.

A free, original browser game on PlayPendium — no download, no install. Browse all games →