Use the mouse to move the paddle... You score more points for more balls in the air... There are a total of 10 balls... A new one appears every 2 seconds... With each bounce the ball loses a bit of energy.
Ball found as a product image from GM Crafts https://www.gmcrafts.co.uk/product/football-iron-on-transfer/ Remix this! Change the graphics, add sound, give it a high score, add power ups / downs ... Have pick ups to change the paddle size (paddle width is a variable you can play with but you'll need to do something with the graphic too), gravity, make different balls with different properties, more bouncy, more balloony... Any questions, just ask! Cheers, Rob