Welcome to Desktop Tower Defense

Desktop TD is a fun flash based puzzle / strategy game where you have to protect your desktop from invaders by spending money on attacking pieces and building a maze for them to follow. Strangely addictive yet stress relieving... how many levels can you survive? For further details on how to play the game see the Instructions. Played before? Check out the latest updates.

Instructions
The Goal	Creeps enter from the top and from the left. You must stop them from reaching the other side or you will lose lives. You start with 20 lives, and when they are gone the game is over.
The Pieces	Towers are used to attack creeps and also to block their path. You buy a Tower by clicking on its image and then clicking somewhere on the map. There are 6 different towers to choose from, each with different abilities. Towers can be improved by buying upgrades.
The Money	Gold is earned by killing creeps, especially the boss creeps which come every 7 levels. You spend Gold on buying Towers and upgrading them.
The Levels	Each level, or 'wave', contains 20 creeps (10 on easy) and they arrive every 25 or so seconds. They cannot be stopped. Your only defense is to purchase Towers to attack them. Some waves have special abilities like FAST or FLYING. Also, after every 7th wave is a BOSS wave that is especially hard to kill.
More Help	If you have never played a Tower Defense before try the Quick Start Tutorial.
Friends	When you submit a score you can set up a Group Scoreboard so that you and your friends can share scores and bragging rights!
Keys	1-6 selects a Tower & 0 deselects. U upgrades the selected Tower. S sells the selected Tower. Holding down Shift allows you to place multiple Towers one after the other. Space to toggle pause.
Sell Timer	It now takes a certain amount of time to sell a tower, the time goes up the more times you sell towers.

Play Desktop TD at work when the boss isn't looking? Donating may improve your bonus...
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Secret Tips: Read the instructions! A highly upgraded tower does a lot more damage than many level 1 towers. Anti-air does what it says on the tin. You can earn a higher score by sending waves early, but be careful not to swamp your maze! 'N' sends the next level early.

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