The orbital frontier of Stelvyr above a vast blue planet

Colony-building strategy

StelvyrColony Defense

Build your future. Defend every inch.

Windows PC Coming soon

Enter the world

A colony is only as strong as its next decision.

Power is limited. Your crew is exposed. And the next swarm is already on its way. In Stelvyr: Colony Defense, every structure and assignment shapes your chances of surviving the final wave.

Genre: Strategy / Simulation
Platform: Windows PC
Mode: Single-player
Campaign: 9 operations

Build with purpose

Connect production, power, and research into a colony that can sustain itself under pressure.

Shape the battlefield

Place walls, turrets, mines, and orbital weapons. Adapt your defenses to the threats approaching from every direction.

Keep your crew alive

Assign engineers, gunners, scientists, and xenobiologists. Their work takes them into the field, and into danger.

Playing Stelvyr: Colony Defense

Colony building meets survival strategy.

Stelvyr: Colony Defense puts you in command of a settlement on a hostile planetary frontier. Expansion and survival depend on the same resources: the minerals you produce, the power you distribute, and the people you send into the field. A larger colony gives you more options, but it also creates more ground to defend.

Build an economy that can survive an attack

Production, research and defense compete for a limited power supply. Decide when to invest in the colony’s economy and when to strengthen the perimeter. A new structure needs more than an empty building site: it needs enough power and crew to become part of a working settlement.

Engineers, gunners, scientists and xenobiologists have jobs beyond a management screen. Your specialists travel to assignments, repair damaged systems and rescue casualties. Sending workers out to restore essential infrastructure can keep the colony alive, but exposes the people you need for the next wave.

Adapt your defenses to each alien threat

Create defensive lines with walls, gates, turrets and mines, then support them with orbital weapons. Enemy attacks can come from several directions, and different alien species threaten different parts of the colony. Some put pressure on fortifications; others target power or support nearby attackers.

Watch the radar and prepare for the approach rather than treating every wave alike. A successful defense might require more firepower, a repair crew in the right place, or a change to the power grid. Orbital conditions and mission events add new problems while the colony is already under pressure.

Command nine campaign operations

The single-player campaign spans nine operations with different starting conditions, objectives and signature threats. Research choices change what your colony can produce and how it fights, while each operation asks you to reconsider the balance between growth and protection.

Three difficulty levels let you choose the pressure. Cadet gives you room to learn and experiment. Commander puts expansion, staffing and research under sustained strain. Veteran demands careful decisions with tighter resources and more dangerous enemies.

A closer look

Inside Stelvyr.

Actual in-game screenshots.
Select an image to explore.

Watch the trailer

Every role. One last line.

Discover the frontier in the official gameplay trailer.

Four Stelvyr specialists and their alien guardian beneath a planetary shield

Official gameplay trailer01:00 · HDEnter the worldStelvyrWatch trailer

An engineer, gunner, scientist and xenobiologist stand with an alien guardian beneath the colony’s planetary shield — Build. Adapt. Defend. Stelvyr · Cinematic artwork

Before you enter

Stelvyr:
your questions answered.

What kind of game is Stelvyr: Colony Defense?

Stelvyr combines sci-fi colony building, resource management and base defense. You develop a working settlement, assign specialist crew and prepare defenses against alien attack waves.

Is Stelvyr a single-player game?

Yes. Stelvyr is a single-player strategy game. You command the colony’s economy, crew and defenses throughout a nine-operation campaign.

Which PC platforms does Stelvyr support?

Stelvyr is being developed for Windows PC and has a Steam store page. Check the Steam listing for current system requirements and release information.

Can I choose the campaign difficulty?

Yes. The campaign offers Cadet, Commander and Veteran difficulties, with different levels of pressure on resources, colony management and combat.

How can I follow Stelvyr’s release?

Stelvyr is coming soon. Add it to your Steam wishlist and follow the store page for development announcements and release updates.

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