Tower Defense Games (PC)

Garden Defense
Tower Defense Game with garden themes.

Download Link (Indowebster) 
Download Link (International)

Monster Mash 
Protect the villagers of Curly Valley that under attack from legions of quirky and bizarre monsters.

Download Link (Indowebster)
Download Link (International)

Master of Defense 
Defend your citizens from monsters by building and upgrading defensive structures.
 
Download Link (Indowebster)  Pass: ajf
Download Link (International)

Plant Vs Zombie 
Defend your brain from hordes of hungry zombies in this really popular and addictive tower defense game.

Download Link (Indowebster) 
Download Link (International) 

Azgard Defence
Hordes of horrible creatures descend upon your fantasy land . Defense your fantasy land with towers.

Download Link (Indowebster)
Download Link (International) 

Dungeon Defense
Dungeon defense is a Tower Defense / Action RPG hybrid created entirely within the UDK. Supporting up to four players, Dungeon Defense challenges gamers to defend their lair against hundreds of invading enemies by summoning magical defenses.

Download Link (International)

Curator Defense
Make your own maze and prevent the enemy from reaching the goal

Download Link (International)

Wicked Defense  
Build your tower and cast spells on the map to support your towers fighting the incoming hordes   
 
Download Link (International)

Notes:Post will be updated with new tower defense game soon...  (Sol Survivor, Defense Grid)
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Other Links
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Towerdefence.net (Play Online / Download TD Games)