Draw a Perfect Circle: Precision Geometric Benchmark & Canvas Game

Draw a Perfect Circle on Adarsh.fun is an interactive browser game testing freehand neuromuscular precision and geometric accuracy on HTML5 canvas. Players attempt to draw a complete 360-degree circle around a fixed origin point in a single continuous stroke, receiving instant mathematical feedback on radius variance and loop continuity.

Mathematical Scoring Formulation

For every sampled pointer coordinate $(x_i, y_i)$ relative to the canvas origin $(x_0, y_0)$, the engine calculates the instantaneous Euclidean radius $r_i = \sqrt{(x_i - x_0)^2 + (y_i - y_0)^2}$. The score formula balances mean radius $\bar{r}$ against standard deviation $\sigma = \sqrt{\frac{1}{N}\sum(r_i - \bar{r})^2}$ and angular continuity penalties. Scores exceeding 98% earn the legendary Human Compass rank.