Here’s a mouse skill tester game I made after switching over from processing to p5js for the first time. You just have to hover your mouse over the square before the timer runs out, and it keeps getting faster and faster.
https://brastin3.github.io/projects/mousegame/
There’s also 4 different play modes that you can switch between by pressing the button at the bottom.
My highscore on the regular mode is 61 at a 1080x978 display size if you want a goal to beat.