Video Game Data

Astra Sentinel is a wave-based survival RTS where endless alien hordes relentlessly assault your planets. Build defenses, colonize planets and manage resources under constant pressure. Will you be able to recover the control of the galaxy?

Developer: Somnambulist Games

Publisher: Somnambulist Games

Release Date: Oct. 22, 2026

Genres: Strategy

Tags: Action RTS Aliens Base Building Building City Builder Difficult Economy Isometric Management Real Time Tactics Real-Time with Pause Resource Management RTS Sci-fi Singleplayer Space Strategy Survival Tactical Tower Defense

Reviews: 0 (Followers)

Followers: 556

Platforms: Windows

Languages: English*, French, Italian, German, Spanish - Spain, Simplified Chinese, Korean, Japanese, Russian, Portuguese - Brazil

Steam Achievements: None

Estimated Wishlists: 5,560

Astra Sentinel on Steam

Categories: Adjustable Difficulty Camera Comfort Custom Volume Controls Family Sharing Playable without Timed Input Save Anytime Single-player Steam Achievements Steam Cloud Stereo Sound Subtitle Options Surround Sound