Schulte Remix

The classic focus-and-speed drill, turned into a race against the clock. The numbers 1 to N² are scattered across a grid in random order — find and tap them in ascending order as fast as you can before the timer empties. A wrong tap costs you time. Grids grow from 3×3 to 6×6 and the clock tightens each level. Used worldwide for attention training, it's a pure reaction game and a perfect short, replayable ad hook.