# center.fit

> A free daily spatial puzzle. Three shapes, one minute, no right answer — just precision.

center.fit is a browser-based daily game where players find the visual center of three procedurally generated shapes. Everyone globally gets the same three shapes each day (seeded by UTC date). Scores are based on how close the player taps to the true area centroid of each shape, averaged across all three.

## How it works

- Three shapes appear one at a time: easy (geometric), medium (organic), hard (chaotic)
- On touch devices: hold to place a cursor, drag to adjust, lift to commit
- On desktop: click to commit
- Accuracy is measured in percentage (3 decimal places) and pixel distance
- Scores cap at 99.998% — 100% is unreachable by design
- After completing all three, the player sees their average score, directional bias, and global percentile
- A shareable image card is generated showing their results

## Details

- URL: https://center.fit
- Cost: Free, no ads, no account required
- Platform: Web browser (mobile and desktop)
- New puzzle: Daily at 00:00 UTC
- Time to play: ~60 seconds

## Features

- Daily streak tracking
- Directional bias profiling (which way you consistently miss)
- Global percentile ranking ("beat 87% of players today")
- Shareable result card (image + text) for messaging apps
- Review screen showing tap position vs true center for each shape
- Dark mode
- Progressive Web App (installable)

## Scoring

- Each shape is scored by distance from the player's tap to the area centroid
- The area centroid is computed via shoelace formula on a densely sampled Bezier polygon
- Shapes are generated using seeded Catmull-Rom splines with varying point counts and variance
- Score = (1 - distance/max_distance) × 100, capped at 99.998%
- Bullseye symbol (🎯) appears for scores ≥98%

## Tagline

how well can your center fit?