First of all, you need to build a few units by clicking on them in the Pre-battle screen.
Ninja Man   Save The Gold Fish   Stan James   Bee Boxing   Pingu Throw   Mr Danger   Flipped Out   Sumo  
Then press Play to enter the frontline. From there, you can click on the units it the toolbar to deploy them into battle. Plan your strategies carefully, and dont forget about the upgrades.
Use your MOUSE

Ping Pong You have to beat very very skilled computer opponent. Use your mouse to control your table tennis bat.