Desktop controls: Left and right arrow keys move to previous and next. Press space to go to a random number 0 to 499. Press D to change to dark mode. Mobile controls: Left and right arrows move to previous and next. Left and right arrows marked with 'x10' move in tens. Tap on my watermark to go to a random number 0 to 499. Tap on the background to change to dark mode.
(c) Numberblocks Part 2: https://scratch.mit.edu/projects/1141240622/