In this add-on, you'll program the sports commentator to give the athletes a performance boost.

First, decide what the sports commentator is going to do to pump up the athletes.

In this example, the sports commentator says a few encouraging words to get each athlete to put on their game face.

Click on the commentator sprite.

Drag out a say block and change its text to "get in the zone".

Try it out.

Next, drag a switch costume to block from the looks menu.

This block tells the computer to switch to a specific backdrop.

To select a new backdrop, click on the stage, then the backdrops tab, and select the choose backdrop from library icon.

Choose any backdrop you like.

This program uses the neon tunnel backdrop.

Switch back to the code by clicking on the commentator sprite.

Click on the dropdown menu to see the different backdrops and select neon tunnel.

Click the block to try it out.

Pretty neat.

Reset the backdrop to its original by adding another switch backdrop to block.

Click the dropdown menu and select the default backdrop.

In this case, building at MIT.

To set how long the performance boost lasts, drag out a wait block from the control menu and tinker with the value until you like how long it stays in the zone.

Keep testing by clicking the block stack.

To give the athletes a performance boost at some point in the program, drag out a when Space key pressed event and add it to the top of the code stack.

Press the Space key to see it work.

For an extra challenge, add a sound effect that plays when the performance boost kicks in using a sound block.

Alright, here's the game plan.

Add a say block and two switch backdrop to blocks to the when Space key pressed event.

Then, add a wait block in between these two blocks.

As an added bonus, add a play sound block to add a sound effect to the performance boost.

Choose an Add-On


Add music that will play while the athletes showcase their moves.

Showcase your Moves

Program the athletes to get active by moving around the stage.

Changing Colors

Make the sprites change colors similar to how athletes wear different jerseys.

In the Zone

Program the sports commentator to give the athletes a performance boost.


  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!