Space Engineers is a sandbox game about engineering, construction, exploration, and survival in space and on planets.
Starting at $24.99
Best Cosmoteer Alternatives ranked by AI · updated Aug 2026
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Cosmoteer is a spaceship design and management game centered on building custom vessels, assigning crew, and fighting tactical battles. It supports sandbox construction, fleet command, trading, missions, and multiplayer scenarios.
Top 6 Cosmoteer alternatives
Oxygen Not Included is a colony simulation in which players manage duplicants, build habitats, and engineer systems for oxygen, temperature, plumbing, and...
Pros
- Detailed thermodynamics, gases, liquids, and waste-management systems
- Strong colony-management layer adds consequences to engineering choices
- More informative visual feedback than Stationeers for complex systems
Cons
- No direct first-person construction or space-station building
- Duplicant management adds complexity absent from Stationeers
- Automation is less programmable and spatially free-form
From $24.99
Space Haven is a sci-fi colony management and survival simulation game about building and operating a spaceship populated by a small crew....
Pros
- Combines detailed spaceship construction with individual crew simulation
- Supports flexible ship layouts and modular expansion
- Mixes exploration, trading, resource gathering, and tactical combat
Cons
- Still has fewer polished systems and less content than RimWorld
- Combat and boarding encounters are less developed than dedicated space RPGs
- Can become repetitive during longer colonies
From $29.99
4
RimWorld is a sci-fi colony sim driven by an intelligent AI storyteller. Inspired by Dwarf Fortress, it offers deep gameplay and rich...
Pros
- Rich storytelling
- Mod support
Cons
- Graphics may not be appealing to everyone
- Can be challenging for new players
$34.99
FTL is a space strategy game where you control a spaceship and its crew as they explore the galaxy, trying to outrun...
Pros
- Deep strategy elements
- Replayability
Cons
- Steep learning curve
- Randomness can lead to frustrating situations
6
IXION
Bulwark Studios
IXION is a single-player space-colony management game about operating a massive generation ship after an interstellar disaster. It combines sector-based station construction,...
Pros
- Closest alternative for managing a large civilian spacecraft
- More cinematic presentation and a fully structured narrative
- Strong multi-sector logistics and resource-planning challenges
Cons
- Less open-ended and less sandbox-oriented than Space Haven
- Crew interactions are less individually detailed
- Limited ship customization compared with modular room construction
From $34.99
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