Up for a challenge?

In this add-on, you'll make your game become increasingly difficult the longer the player plays.

To start, select one of the chaser sprites.

Program the timer to control the chaser sprite's speed.

Place the time inside the move block.

Now, when the time equals zero, the sprite moves zero steps each time the loop runs.

When the timer equals five, the sprite moves five steps each time the loop runs.

Click the flag to test.


The chaser starts moving slowly, and increases in speed as play continues.

Once the timer reaches ten seconds, and the sprite moves ten steps each time the loop runs, the game gets really difficult.

To extend the gameplay, add a division operator with a timer, causing the sprites to only move a fraction of the time.

For example, if you use timer divided by two, after ten seconds the sprite will only move ten divided by two, or five steps, each time the loop is run.

If you put the timer variable inside each chaser's move block, you can see that the game starts slowly, and increases speed as play continues.

Now it's your turn.

Make your game increasingly difficult the longer the player plays with timer and division blocks.

Tinker with the value in the division block until you get an effect you like.

Ask a neighbor to play your game, and see if they think it's too easy, or too hard, or just right.

Choose an Add-On

Play a Sound if Caught

Add a sound to your game and program your project to play that sound.

Play Your Game with a Friend

Program one sprite to be controlled by another player.

Change Up the Player

Change up your player's costume whenever it touches another sprite.

Speed Up the Chase

Make the game harder by making the chasers faster.

High Score!

Create a new variable that stores the game's current high score.


  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!
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