From Webkinz Insider Wiki
The Air Hockey Table can be purchased in the wShop for 500 KinzCash.
How to Play
Your goal is to get the puck into your opponent's goal. You can do this by hitting the puck in the goal's direction. You can do this by moving your mouse in the direction you want the puck to go. But, you also must protect your own goal from your opponents attacks. You mouse controls the puck.
You can play with the computer on easy, medium, or hard. You can also play in multiplayer mode.