PCGame

Sentinel 3: Homeworld

Sci-fi tower defense with a customizable commander on an alien homeworld

Origin8 · Published by Strategy First · Released Feb 3, 2014

IndieStrategy

Reviews
Mostly Positive
80% of 148
Recent reviews
Not enough recent
Players
0
daily peak, Nov 7, 2026
Steam Deck
Untested
Last update on Steam
11 years ago
Jun 4, 2015
Minimum PC
OpenGL 1.3 gfx
1 GB RAM · 0.3 GB disk
Full requirements

What is Sentinel 3: Homeworld?

In this single-player tower defense game, you place turrets and use a power-armored commander to hold off enemies on an alien homeworld. You unlock weapons and abilities across campaign levels, customize your loadout between missions, or play endless modes on the maps.

For you if...

  • +you enjoy planning turret defenses and using abilities
  • +you like unlocking weapons across campaign missions
  • +you want endless defense maps or score-focused play

Not for you if...

  • −you prefer direct combat over managing defensive turrets
  • −you want cooperative missions instead of single-player campaigns

What players say

80% of 148 reviews are positive

Players praise the core tower defense play and the amount of campaign content, but criticize the PC port's controls and visuals. Some recent players report Windows 11 crashes, lost saves, and achievements that fail to unlock.

Screenshots and trailer

Sentinel 3: Homeworld screenshot 1

Sentinel 3: Homeworld system requirements

Minimum: OpenGL 1.3 gfx, 1 GB RAM, 0.3 GB of disk space.

As published by the developer.

Can my PC run Sentinel 3: Homeworld?

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Minimum

OS
Windows Windows Vista or Windows 7
Processor
1.2GHz+ Processor
Graphics
OpenGL 1.3 gfx card/driver with 128+MB Video Ram
Memory
1 GB RAM
Storage
300 MB available space

Does Sentinel 3: Homeworld have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Sentinel 3: Homeworld run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
47
Steam features
Family Sharing
Languages
Text only: English.

Does Sentinel 3: Homeworld use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 25, 2026. How to filter AI games on Steam

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