Free to play · Runs in your browser · No download

Hidden Sector Online

Command your corner of a hidden, ever-shifting universe. Mine it, settle it, defend it - and take what your rivals cannot hold.

Start playingSee how it works

0Commanders
42Worlds claimed
0Fleets in flight
1Alliances

Every world is a place, not a menu

Your colony is a planet you can turn in your hands. Watch your refineries, reactors and shipyards rise on its surface, see the debris ring a lost battle leaves behind, and track the moon that forms out of the wreckage.

  • Real-time production you can watch climb
  • Sector and universe maps in full 3D
  • Plays on phone, tablet and desktop

What is Hidden Sector Online?

A browser-based space strategy game about holding on to something worth taking: one planet, a working economy, a fleet you built yourself, and every other commander in the universe wondering whether they could take it from you.

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What you do out here

Build an empire

Raise extractors, reactors and shipyards, balance power against workforce, and grow one colony into many.

Command fleets

Scout, raid, haul and invade. Every hull has a job, and fuel and cargo decide how far your reach really goes.

Fight for what you take

Win in orbit, land your marines, then hold the world under siege long enough to plant your flag.

Forge alliances

Join forces, share recon and battle reports, run a private forum and chat, and mentor newcomers.

Spy before you strike

Espionage reveals stockpiles, buildings, defences and fleets - the higher your level, the deeper you see.

Climb the rankings

Points, offence, defence and combat boards, each tracking how far you have moved since yesterday.

Your first hour

  1. 1

    Claim your world

    Sign in and a home planet is yours, somewhere in the universe with room to grow.

  2. 2

    Build the economy

    Alloy, crystal and helium fund everything. Guided missions walk you through your first buildings.

  3. 3

    Take to the stars

    Launch your first fleet, meet your neighbours, and decide who to trade with and who to raid.

The sector is waiting

Take a world, build a fleet, and find out how long you can hold it.