10 Best Sci-Fi Survival Games in 2026 (Build, Explore & Survive)

Sci-fi survival games combine resource management, base building, exploration, and crafting in futuristic worlds filled with alien planets, hostile environments, and mysterious technologies. Instead of surviving in forests or deserts, players must adapt to oxygen shortages, radiation zones, alien creatures, and extreme space conditions.

In 2026, the genre is stronger than ever. From underwater alien oceans to procedurally generated planets, these games offer massive worlds where you can build bases, gather resources, explore unknown environments, and fight for survival.

This guide highlights the 10 best sci-fi survival games in 2026 that deliver immersive gameplay, deep crafting systems, and unforgettable exploration.

Quick Comparison Chart – Best Sci-Fi Survival Games

10. Osiris: New Dawn

Osiris: New Dawn is an open-world sci-fi survival game set in the year 2078, where humanity begins exploring distant star systems. Players must gather resources, build shelters, and survive on alien planets filled with hostile environments.

Key Features

• Planetary exploration and mining

• Base building and colony management

• Combat against alien creatures

• Multiplayer co-op survival

Pros

• Large open world planets

• Detailed crafting system

• Multiplayer survival gameplay

Cons

• Steep learning curve

• Resource grinding can be slow

9. Breathedge

Breathedge is a space survival adventure where players must survive after a spaceship accident. The game mixes humor, crafting mechanics, and oxygen management as players explore wreckage and build equipment.

Key Features

• Zero-gravity survival gameplay

• Crafting tools and stations

• Exploration of space debris fields

• Story-driven campaign

Pros

• Unique humor and storytelling

• Creative crafting system

• Atmospheric space setting

Cons

• Limited open-world exploration

8. Cubic Odyssey

Cubic Odyssey is a voxel-based sandbox survival game where players explore procedurally generated worlds while fighting a mysterious intergalactic infection.

Key Features

• Massive voxel-generated worlds

• Crafting and base building

• Alien enemies and exploration

• Sandbox survival gameplay

Pros

• Creative sandbox mechanics

• Endless exploration potential

Cons

• Graphics may feel simple for some players

7. Astroneer

Official Website: https://astroneer.space/

Astroneer focuses on planetary exploration and creative building. Players gather resources, craft equipment, and build structures across multiple colorful planets.

Key Features

• Procedurally generated planets

• Terrain deformation tools

• Resource automation systems

• Co-op multiplayer exploration

Pros

• Relaxing exploration gameplay

• Creative base-building mechanics

• Beautiful art style

Cons

• Limited combat mechanics

6. No Man’s Sky

Official Website: https://www.nomanssky.com/

No Man’s Sky is one of the largest exploration games ever made. It features billions of procedurally generated planets, allowing players to build bases, mine resources, and explore alien ecosystems.

Key Features

• Procedural universe with billions of planets

• Base building and crafting

• Multiplayer exploration

• Space travel and fleet management

Pros

• Endless exploration

• Frequent free updates

• Huge universe

Cons

• Can feel overwhelming for new players

5. The Planet Crafter

Official Website: https://mijugames.com/

The Planet Crafter is a survival game where players terraform a hostile planet by generating oxygen, heat, and atmospheric pressure to make it habitable.

Key Features

• Terraforming gameplay mechanics

• Resource gathering and crafting

• Base building and automation

• Solo or co-op survival

Pros

• Unique terraforming system

• Relaxing progression mechanics

Cons

• Limited combat elements

4. Returnal

Official Website: https://www.playstation.com/en-us/games/returnal/

Returnal blends roguelike gameplay with sci-fi survival mechanics. Players explore a hostile alien planet where death resets the timeline, forcing them to adapt and improve with each run.

Key Features

• Roguelike survival gameplay

• Procedural environments

• Intense combat encounters

• Strong narrative story

Pros

• High production quality

• Fast and challenging gameplay

Cons

• Difficult for casual players

3. Icarus

Official Website: https://surviveicarus.com/

Icarus is a session-based survival game where players travel from orbit to hostile planets to complete missions and gather resources.

Key Features

• PvE survival missions

• Base construction and crafting

• Environmental hazards like storms

• Cooperative multiplayer

Pros

• Strategic survival gameplay

• Dynamic weather systems

Cons

• Missions can be time-limited

2. Subnautica

Subnautica places players on an alien ocean planet where survival depends on managing oxygen, building underwater bases, and exploring dangerous ecosystems.

Key Features

• Massive underwater open world

• Crafting submarines and equipment

• Alien ecosystems and creatures

• Story-driven survival adventure

Pros

• Immersive world design

• Unique underwater gameplay

Cons

• Some players may find deep-sea exploration terrifying

1. Subnautica: Below Zero

Subnautica: Below Zero expands the original game’s survival mechanics with a frozen alien environment filled with new creatures, vehicles, and storylines.

Key Features

• Arctic alien survival world

• Expanded base building

• New vehicles and tools

• Deep story exploration

Pros

• Beautiful icy environments

• Improved narrative elements

Cons

• Smaller map than the original game

Gameplay Feature Comparison

Why Sci-Fi Survival Games Are So Popular

Sci-fi survival games attract players because they combine open-world exploration with strategic survival mechanics.

Popular gameplay elements include:

• Base building and crafting systems

• Exploration of alien planets

• Resource management mechanics

• Procedural world generation

• Cooperative multiplayer survival

These features create endless replayability and immersive experiences.

FAQs – Sci-Fi Survival Games

What is a sci-fi survival game?

A sci-fi survival game is a survival game set in futuristic environments such as alien planets, space stations, or distant galaxies where players must gather resources, craft tools, and build shelters.

What are the best sci-fi survival games for beginners?

Beginner-friendly games include: Astroneer The Planet Crafter No Man’s Sky These games offer slower progression and easier survival mechanics.

Which sci-fi survival game has the biggest world?

No Man’s Sky features billions of procedurally generated planets, making it one of the largest game universes ever created.

Can you play sci-fi survival games with friends?

Yes. Many games such as Icarus, Astroneer, and No Man’s Sky support cooperative multiplayer.

What skills are important in survival games?

Players need to master: Resource gathering Crafting and base building Environmental awareness Exploration and combat

Final Thoughts

Sci-fi survival games deliver some of the most immersive experiences in modern gaming. Whether you’re exploring alien oceans in Subnautica, terraforming planets in The Planet Crafter, or building bases across the galaxy in No Man’s Sky, these games offer endless possibilities.

If you enjoy building bases, exploring unknown worlds, and surviving extreme environments, the games on this list are among the best sci-fi survival experiences you can play in 2026.