To play the game its neccesary to download microsoft plugin called silverlight if you dont have it allready,
the download is free fast and safe and it is directly from microsoft site.
Guidlines:
In this game it is best to build a long maze so that you will have plenty of time befor the monster can slip away from the board,
Try to find the best combination of towers to add for each level,
Dont forget to watch your gold, and not to over spend the money on cheep towers that can't stop the monsters.
And enjoy the game!