STEP 1.
Create four new backgrounds: two mazes, "game over" and "congratulations".
STEP 2.
Insert a new sprite (dog). The dog always appears in the same position when the green flag is clicked.
STEP 3.
Make sure we can use the arrow keys to make the dog move.
STEP 4.
When the dog hits the black edge of the maze, the game over background appears and the dog disappears. If you click on the green flag, the game will restart and the dog will reappear.
STEP 5.
There's a bone somewhere in the maze. That bone is only visible in the first background. When the dog hits the bone, it says something and moves to the next background. He returns to his starting position.
STEP 6.
In the second background, the bone is replaced by a ball. The ball is only visible in the second background. When the dog hits the ball, the background 'congratulations' appears.
