The galaxy's finest tower defense series returns with an epic new installment!

Sentinel's award-winning strategy gameplay expands explosively as the interstellar war moves to a mysterious alien world. Deploy devastating new towers and technology against an enemy that's smarter and more deadly than ever before. Battle across vast landscapes and earn a wealth of upgrades as you explore the mystery of the Dark Star.CONQUER

• A huge campaign across 26 unique maps, each also playable in Endless mode.

• Defend massive, multi-screen landscapes and marathon paths.DESTROY

• A bestiary full of new and returning enemies. Their special abilities and varied behaviour will keep even veteran players on their toes.

• The aliens fight back with the ability to damage, disable and destroy towers. How will you choose to counter them?LOCK'N LOAD

• Pick your loadout from an extensive assortment of weaponry. Unlock Uber Towers that pack power to match their size.

• Deploy your own units onto the path to hinder attackers.

• Call in support from the skies with the Sentinel's trademark ship weapons.

• Unleash drones, nukes and more from your new improved Stronghold.

• Control Commander heroes to back up your defenses. Earn experience and level up to gain powerful new abilities.TECH

• Real-time dynamic lighting and shader effects bring atmosphere to the alien landscape for the best Sentinel experience yet.**

• iCloud enabled.

• GameCenter for leaderboards and achievements.REWARD

• Spend your earnings on a massive selection of persistent upgrades to support your play style and complement your tactics.

• Upload your score to the Global Nexus and contribute to the worldwide cooperative push for rewards.Follow us @origin8 on Twitter, Facebook

http://www.origin8.com

http://www.sentinel4.com** Recommended for: iPad2+, iPhone4S+ and iPod Touch 5thGen+.
** The game will work on iPhone3GS, iPad1 and iPod Touch 4thGen but without these effects.
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More info: http://www.iPhoneCake.com/app_845072358_.html