Sentinel 3: Homeworld
Buy Sentinel 3: Homeworld Steam key at the best price. Sci-fi tower defense from Origin8 with instant delivery.
Customer reviews
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System requirements
Minimum
- Processor
- 1.2GHz+ Processor
- Memory
- 1 GB RAM
- Graphics card
- OpenGL 1.3 gfx card/driver with 128+MB Video Ram
- Storage
- 300 MB available space
Source: Steam · updated September 13, 2026
Sentinel 3: Homeworld is the biggest installment of the award-winning Sentinel sci-fi tower defense series, now on PC. Take the fight to the alien homeworld and build your defense with a massive arsenal of weapons, turrets, orbital ship attacks, automated drones, and abilities.
This is a strategy game for players who like tactical preparation and active battlefield control. Alongside your defenses, you command a powerful unit in power armor that can level up and gain new abilities as you play. Use the Armory to customize your weapon loadout for each mission and adjust your approach to the demands of the map.
The game includes an epic campaign across 20 levels, endless modes for all maps, Steam Achievements, and a Classic mode focused on pure skill-based score competition. New content adds a new commander, enemies, campaign, weapons, and more. The soundtrack features exclusive music by Specimen A.
Buy Sentinel 3: Homeworld as a Steam key and get a straightforward purchase flow focused on the best price and instant delivery. Developed by Origin8 and published by Strategy First, this Indie Strategy release is a compact choice for fans of sci-fi tower defense.
