Experience the Ultimate classic tower defense yet adding monetary value to build your armory on your Droid X2 with the most popular Tower Defense game on Android Robo Defense. Stop the 100 enemy attack waves attempting to get from one side of the battlefield to the other using your gun turrets, towers and slow guns.

The game features Open Maps, Upgradable Towers, stat upgrades, achievements and award points to gain after completion of each level. Robo Defense includes a massive gameplay containing 40 levels of difficulty with three levels of map difficulty. In addition to the open maps with single opening and exit, the game offers one side with three openings making planning the defense more challenging. Consistent attacks are led by standard troops, lumbering tanks, zippy motorcycles or an assortment of aerial units. Game objective is to survive as long as possible and earn much money as possible to purchase artillery. Towers can be upgraded or modified by changing guns to anti-aircraft cannons and then they can be upgraded rocket systems, SAMs and many more. Players are entitled to number of achievements when completing a level without using guns or rockets and without upgrading towers. The way to victory lies on how you deploy obstacles for enemy swarms forcing them to route a longer path and maximizing their exposure to your weapons. Game speed can be doubled for who are seeking quick action and adventure. Robo defense is an addictive game with decent graphics and sound effects developed by Lupis Labs for android 2.0 or higher. This highly customizable game is available for a free version with less features and the full version cost $2.99 in Android Market.