Alien Horizon (Preview Alpha)

Survival city builder about making an alien colony self-sufficient

Purple Nebula · Released Jan 30, 2024

Reviews: Very Positive; 86% of 217
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Unsupported
Last update on Steam: 1 year ago; Jul 11, 2025
Minimum PC: GTX 1060; 16 GB RAM · 1 GB disk; Full requirements

What is Alien Horizon (Preview Alpha)?

This free, single-player preview is a sci-fi colony builder set on a hostile planet after Earth's destruction. You construct housing and factories around a sleeper ship, explore for supplies and resource deposits, and manage transport, laws, and colonists' needs. The preview has no time or content limits.

For you if...

+you enjoy planning complex production chains with realistic recipes

Not for you if...

−you want simple systems and a forgiving learning curve

What players say

86% of 217 reviews are positive

Players praise the colony progression and pacing. Recent feedback also flags performance problems and warns of memory-related crashes when exploring extensively.

Screenshots and trailer

Alien Horizon (Preview Alpha) screenshot 1

Alien Horizon (Preview Alpha) system requirements

Minimum: GTX 1060, 16 GB RAM, 1 GB of disk space.

As published by the developer.

Can my PC run Alien Horizon (Preview Alpha)?

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Minimum

OS: Windows 10
Processor: 3 GHz, 4 cores
Graphics: GTX 1060 or AMD equivalent
Memory: 16 GB RAM
Storage: 1 GB available space
DirectX: Version 11

Does Alien Horizon (Preview Alpha) have co-op or multiplayer?

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

Single-player

Does Alien Horizon (Preview Alpha) run on Steam Deck?

Unsupported No: Valve rates it Unsupported on Steam Deck.

Not supported on SteamOS

PC version details

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

Does Alien Horizon (Preview Alpha) 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 27, 2026. How to filter AI games on Steam