How to Play
Perfect Slice is a precision game: you get one straight cut per shape, and the closer that cut gets to the requested percentage, the more points you earn.
The goal
Each round shows an irregular shape and a target percentage, like 50% or 63%. Your job is to draw a single straight line across the shape that divides it into two pieces, then choose one of those pieces as your answer. The closer that piece’s area is to the target percentage of the whole shape, the better your score.
Step by step
- Read the target. The header shows the percentage you’re aiming to cut off, e.g. “Cut 42%”.
- Draw your cut. Click or tap and drag a straight line across the shape. There’s no grid, no ruler, and no live percentage readout — just your eye.
- Pick a piece. The shape splits into two pieces along your cut. Select the one you believe is closest to the target percentage.
- Confirm. Press CONFIRM to lock in your answer and reveal how close you got.
- Repeat. A full run is 5 rounds. Shapes get no simpler, and target percentages get progressively less forgiving each round.
Scoring
Each round is worth up to 1,000 points, for a maximum run score of 5,000. Points are based on your cut error — the absolute difference between your piece’s actual percentage and the target. A near-perfect cut (within a tenth of a percentage point) scores the full 1,000; the score falls off smoothly as your error grows, reaching 0 once the error passes about 10 percentage points.
| Cut error | Approx. score |
|---|---|
| 0.25 pts off | ~985 |
| 1.0 pts off | ~900 |
| 3.0 pts off | ~600 |
| 5.0 pts off | ~350 |
| 7.5+ pts off | ~150 and fading to 0 |
Normal vs. Hardcore
Normal mode lets you press RESET to redraw your cut as many times as you like before confirming — so you can experiment freely until you’re confident.
Hardcore mode plays by the same rules, but RESET is disabled: the first cut you draw is final. There’s no second-guessing, so every line has to count.
Tips
- Shapes are deliberately irregular and slightly concave, so a cut that looks 50/50 at a glance is often not — judge by area, not by eye-balled symmetry.
- Your cut extends only in the direction you drag, starting from where you first pressed down — think of it as a ray, not an infinite line.
- Your best score and best single-cut accuracy are saved on this device.