The Galaxy's Finest Tower Defense Series Returns!

Prepare yourself for an epic new installment in the award-winning Sentinel series! The interstellar war has moved to a mysterious alien world, bringing explosive strategy gameplay that will challenge even the most seasoned players.

Conquer New Frontiers



  • A Huge Campaign: Battle across 26 unique maps, each playable in Endless mode.

  • Secondary Campaign: Unveil more weapons and secrets of the Dark Star.

  • Massive Landscapes: Defend multi-screen landscapes and marathon paths.

Destroy Your Enemies



  • New and Returning Enemies: A bestiary filled with foes that will keep you on your toes.

  • Adaptive Aliens: Enemies can damage, disable, and destroy your towers. Choose your counters wisely!

Lock 'n Load



  • Extensive Loadout: Pick from a vast assortment of weaponry and unlock Uber Towers.

  • Deploy Units: Place your own units on the path to hinder attackers.

  • Sky Support: Call in support from the skies with Sentinel's signature ship weapons.

  • Unleash Powerful Weapons: Use drones, nukes, and more from your improved Stronghold.

  • Control Commander Heroes: Back up your defenses and earn experience to unlock new abilities.

Advanced Technology



  • Dynamic Lighting: Experience real-time dynamic lighting and shader effects that enhance the atmosphere of the alien landscape.

  • Google Play Saving: Enjoy seamless gameplay with Google Play Saving enabled.

  • Leaderboards and Achievements: Compete with others using Google Play Services.

Earn Rewards



  • Persistent Upgrades: Spend your earnings on a massive selection of upgrades tailored to your play style.

  • Global Nexus: Upload your score and contribute to the worldwide cooperative push for rewards.

For more information, visit Sentinel 4.


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