Does the line need to be straight?

Yes — the game accepts only straight lines. A curved cut could divide any shape perfectly, but straight lines are the real challenge.

What counts as a "perfect" split?

Less than 1% area error is a perfect score. Under 3% is excellent. Most players average 5–8% error on irregular shapes.

Is there always one correct line?

No — infinite lines through different angles can bisect a shape's area equally. The game scores accuracy of your chosen line regardless of angle.

Can You Split This Evenly?

Can you split evenly — draw a single line that divides a shape into two equal areas? This game shows a filled shape and asks you to draw a freehand line through it. Your score is how close the two resulting pieces are in area, expressed as a percentage error from a perfect 50/50 split. Rectangles are forgiving; concave polygons and irregular blobs will make you question everything you know about area.

How to Play

A shape appears on screen — examine it before drawing.
Draw a single line across the shape to divide it in half.
The game calculates the area of each resulting piece.
Your score shows the split error — how far from 50/50 your line landed.

Why It's Hard

Humans estimate area by perceived visual weight, which is heavily influenced by a shape's longest dimension. A wide, flat rectangle looks like it should be divided horizontally, but sometimes the vertical cut is more balanced. Your brain anchors to the shape's primary axis and systematically misses the true equal-area line by an average of 8–12%.

Tips

1For rectangles, a line through the center parallel to any side is always a perfect split.
2For L-shapes, mentally "balance" the two legs before drawing — the cut often needs to pass through the corner region.
3Draw the line confidently in one stroke — hesitation leads to drift.

FAQ

Does the line need to be straight?: Yes — the game accepts only straight lines. A curved cut could divide any shape perfectly, but straight lines are the real challenge.
What counts as a "perfect" split?: Less than 1% area error is a perfect score. Under 3% is excellent. Most players average 5–8% error on irregular shapes.
Is there always one correct line?: No — infinite lines through different angles can bisect a shape's area equally. The game scores accuracy of your chosen line regardless of angle.

Built by

Ethan R. Caldwell

Game Developer · Wilmington, DE

Designed Can You Split This Evenly? and 46 other browser puzzles. Game developer based in Wilmington, Delaware. Hardcore puzzle gamer at heart — obsessed with logic puzzles, sokoban-style mechanics, and physics-based brain teasers. Off the clock, unwinds with ARPGs, RPGs and JRPGs.

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