The aim is to protect your system from the virus attack and disable the numerous emoticons before your system gets overloaded and crashes. The sensors help you detect the presence of an emoticon.

Instructions:

Move your Mouse over the play screen beside a red sensor to view the emoticon present in it.Left Click to the right of the happy smiley (towards the arrows), Left Click to the left of the angry smiley (towards the box) and shoot the spider smiley by Left Clicking on it until it's gone.
You will also come across a masked emoticon, Left Click on it to reveal the smiley hidden behind. If all the sensors become red, the game will be over.