Click green flag and use space to move click space to go up and if not if automatically falls. Click green flag to start over again. Like and Favorite.
Thanks CS first helping me make this. Watch this video at CS First to learn how to build it: https://csfirst.withgoogle.com/c/cs-first/en/game-design/cave-surfing-game/side-scrolling-games-and-if-else-statements.html