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Congratulations on coding your cave surfing game.

Now, you can customize your game with add-ons.

In “Make Your Own Music,” create music to play in the game.

Design and code more cave sprites in “Add Another Cave”.

Up the difficulty level in “No More Gliding” by removing the ability to hold the spacebar.

In “Dangerous Cave Walls,” make the sprite explode if it touches the walls of the cave.

In “Add Another Level,” program the game to speed up every time a player wins.

Add a key that lets the bird dive faster in “Dive.”

Have fun making your game even more original!

Choose an Add-On

Make Your Own Music

Add a drum beat and background music to your game.

Add Another Cave Section

Design a new cave sprite with black edges and add it to your game.

Make the Game Harder

Make the player press the spacebar over and over to keep the sprite in flight.

Dangerous Cave Walls

Make the player sprite explode when it touches the walls of the cave.

Add Another Level

Create additional game levels that get faster and harder as the player progresses.


Make the sprite dive, or move down faster than it falls.


  1. Choose an Add-On, and click "watch" to learn how to build it.
  2. Once you finish one Add-On, try another one below the video!
  • The song “Magic Marker” is © YouTube-- CC-BY-SA 4.0 does not apply.