Risk it or bank it: Prime Quest turns prime-number recognition into a tense team challenge of memory, strategy and calculated chances. Have a go.

Prime Quest is a fast-paced, high-stakes game for revising prime numbers. Two teams take turns uncovering the hidden values in a shuffled 100-square. Find a prime, click it again to collect its value, then decide whether to continue building the turn total or bank the points safely.

There is a catch: landing on a bust number ends the turn and scores zero points. In Easy mode, multiples of 10 are busts; in Hard mode, multiples of 5 are busts. The first team to exceed 530 Quest Points wins.

Features include:

A shuffled interactive 100-square containing the numbers 1 to 100

Team-based Blue versus Red gameplay

Prime-number recognition with a satisfying risk-and-reward decision

Click again to collect revealed primes and add their values to the running turn total

Bank collected primes to secure points before risking another reveal

Easy mode: multiples of 10 end the turn

Hard mode: multiples of 5 end the turn

Memory mode, where the board remains in place between turns

Shuffle mode, where unbanked numbers are reshuffled after each turn

Optional Prime Flash support, allowing revealed primes to flash or remain incognito

Live team totals, progress bars and lists of each team’s banked primes

A clear first-to-531-points win condition

Simply open the HTML file in a web browser, choose the settings and start a new game. No printing, logins or preparation required.