SplitShape
Cut shapes as close to 50/50 as possible.
5 rounds. Drag across the shape to draw your cut line. Score is based on how close you get to a perfect 50/50 split.
About SplitShape
SplitShape is a perception puzzle where the goal is to cut a randomly-generated shape into two halves as close to 50/50 as possible. The shape pool alternates between irregular polygons, organic blobs interpolated through control points, lobed flowers driven by sinusoidal radii, stretched ovals, and non-convex spiky stars. Score is 100 minus the gap between your smaller-half percentage and a perfect 50%. Play five rounds for an average score out of 100.
How to play SplitShape
Drag a line across the shape — start outside the boundary, drag through, release. The line is automatically extended infinitely in both directions and clipped against the shape, so the cut covers the full shape no matter how short your gesture is. The two resulting pieces drift apart for a moment so you can see how close to 50/50 you got. Cuts work for arbitrary shapes including non-convex ones thanks to Sutherland–Hodgman half-plane clipping.
Tips for higher scores
Look for the shape's visual center of mass — the line that passes through it usually splits area more evenly than a line through the geometric centroid. For lopsided shapes (one big lobe, one small) draw the line closer to the larger lobe to balance area. For stars and lobed shapes, lines that pass between two opposite features tend to split the area evenly thanks to symmetry. The line angle matters as much as its position.