In Basketball Challenge game online, you are always playing in offense. Place your mouse cursor over your player and move mouse to go left and right. Practice to find right speed of movement. If you try to move too fast, the cursor will separate from the players body and you will temporarily loose control. Just place it back over the player and go again. Shorter quicker movements may be more effective. To shoot the ball, click and hold the mouse button, release once the player reaches the top of his jump. If you miss the basket, you must have released the ball too late or early.