Page 7 of 15 Testing the Game Now it is time to test the game. Better save the game first. Click on the Run menu and press Run normally or press the green run button in the toolbar. If you followed the previous steps correctly the Game Maker window disappears and a window shows in which the apples move around. If they hit the wall they should bounce back. And if you manage to click with your mouse on one of the apples, you should see the score in the window caption increase and the apple jumps somewhere else. Better check the game carefully. Do the apples move in different directions? If not you probably did not create the correct Create event. Do they bounce of the walls? If not, you probably either did not make the walls solid or you did not create the correct Collision event. Can you click on them with the mouse and do you get some additional score? If not you must have made an error in the Mouse press event. You can switch the game to fullscreen mode by pressing F4. Press Esc to end the game and return the Game Maker.