Press the up arrow key or space to jump. For mobile controls, tap the screen to jump (duh). Try to collect as many coins as possible. Touching the koopas depletes your health. When your health gets to 0, it's a game over.
Thanks to @Will_Wam for the sound effects and koopa troopa sprites. I created all of the code. My first project to get 100 views! 5/4/2023: 200 views! 5/25/2023: 300 views! 8/24/2023: 400 views!