Vectorduel

Type a function and your shot flies along its curve — thread every target and dodge the walls with the simplest equation you can find.

How to play

Each level scatters targets and obstacle walls across a coordinate grid. Type a function f(x) and fire; your shot traces that curve. Pass it through all the targets while missing every wall to clear the level, and lower-degree equations score a bonus.

• Enter a function such as x^2 - 1, exp(0.5*x), or 2*sin(x) + 1
• Each round restricts you to a function family (polynomial, exponential, trig, or any)
• Hit every target and avoid the walls to solve it
• Simpler, lower-degree curves earn more points; extra attempts cost score

Game modes

• Daily: one shared level per day
• Practice: fresh randomized levels on demand

Controls

• Desktop: type your function and press Enter or click Fire; click New for another puzzle
• Phone & tablet: tap the function field to type and tap Fire (a keyboard makes entering expressions easier)

Tips & strategy

• Plot the targets in your head first — their layout hints at whether a line, parabola, or wave fits best
• Reach for the lowest-degree function that still threads every target to claim the simplicity bonus

What you'll learn

Vectorduel turns graphing functions into target practice, building intuition for how functions behave.

• Skills: graphing functions, coordinate geometry, function behavior
• Best for: roughly grades 9–12 (ages 14+)
• For parents & teachers: graphing functions, made a game.

About Vectorduel

Vectorduel is an original free browser math game that turns graphing functions into target practice, building intuition for how coefficients and function families shape a curve.

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