STEP 10: Let's make our UFOs move along the x-axis at random speeds.

• Go to and drag out Random Integer. Drop it inside the for loop.
• Change its name to rand_speed.
• Change the range so that it creates a random number from (-2, 2).
• Go to and use Set x Speed to set the ufo's speed to rand_speed.

To navigate the page using the TAB key, first press ESC to exit the code editor.