Punnett

Two parents, a punnett square in your head — call the offspring odds, then hatch.

How to play

You're shown two parent creatures with known genotypes for a trait. Predict the probability of each offspring outcome — effectively reading the punnett square — place your bet, then hatch the offspring to see if your ratios were right.

• Read both parents' genotypes for the trait in play
• Bet the probability of each possible offspring result
• Hatch to reveal the outcomes against your prediction
• Accurate odds score better

Game modes

• Daily cross — the same parents for everyone today
• Practice — fresh crosses each round

Controls

• Desktop: click to set your bets on the betting panel, then hatch
• Phone & tablet: tap to place your bets and hatch

Tips & strategy

• Sketch the punnett square: each parent contributes one allele per offspring
• A heterozygous cross often gives the classic 3:1 dominant-to-recessive split
• Two heterozygous parents yield 1:2:1 across the genotypes — lean on those ratios

What you'll learn

Punnett is a genetics game about inheritance, working allele crosses and the probabilities that decide which traits appear.

• Skills: genetics, inheritance, Punnett squares, probability, alleles
• Best for: roughly grades 7–12 (ages 12+)
• For parents & teachers: classic genetics problems made interactive.

About Punnett

Punnett is a genetics game about inheritance, allele crosses and probability. It's an original, free browser game made in-house for PlayPendium.

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