** Customize your weapon loadout in the Armory to match the demands of the mission. ** Over 20 unlockable turrets, orbital ship weapons, automated drones and abilities at your disposal! ** A powerful commander unit which can level up and gain new abilities as you play! ** A second epic campaign with more enemies, weapons and features! ** A gruelling campaign across 20 levels! ** Universal support for phones & tablets – with HD resolution graphic support! Take the fight to the alien homeworld and unleash a massive arsenal of weaponry & get up close and personal on the battlefield in your power armor to execute devastating attacks and support your defenses! For 3 bucks this game is a steal, for the high quality of it's gameplay/design and quantity of content it's also one of the best games I've bought on the Windows App Store.The third installment of the award winning Sentinel sci-fi tower defense series! The campagn consists of 20 levels with 4 modes of difficulty, so you'll need those upgrades, and has a ton of replay value not to mention the Classic mode (which is kind of like a challenge mode with set weapons and powers for different maps) and of course, Endless mode for all 16 maps. Though the Commader is provided to you from the start there are a TON of upgrades you can earn for him including weapons, new abilities, and his individual stats (health, weapons range, strength, firepower). The additions of a Commander (which makes you feel like much more a part of the action) and multiple gates to defend (which adds multiple levels of strategy to the game, with the new need of a possible fallback position) are what makes this game truely special. Sentinel 3 holds it's own with it's upgradable towers, unlockable weapons, and killer enemy waves not to mention it's amazing graphics, sound, and UI. IBomber is the standard for tower defense games, with it's WWII setting, and most TD games are basically a clone of this type of game except for rare exceptions like Sentinel 3. In my opinion there are only 2 tower defense games that are absolutely essential on the Windows App Store, IBomber Defense & Sentinel 3.

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