The adventure happened when you decided to see what's in the cave. The cave became flooded due to the heavy rain, and obstacles coming from up and down. to escape the cave you must go through the adventure and escape 100 points.
When you got to the page the game will start automatically, you can use the space bar to jump (flap). You win the game once you score 100 points, but you can will challenge yourself for more.
The adventure cave game is based on recreating flappy bird.
toturials:
https://www.youtube.com/watch?v=b6A4XHkTjs8
https://phaser.io/news/2015/03/flappy-bird-tutorial