Sentinel 4: Dark Star is a strategy game developed by Origin8 and released on iOS. 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.
