ONLINE MMO

Space strategy with thousands of live players

Thousands of live players, active alliance wars 24/7, real diplomacy. Not a single-player RPG — a true online MMO with a continuous, living world.

Play free See the game

Free
Thousands of players
Alliances 24/7
Browser + Mobile

See the game

Real in-game screens: your empire, fleet, galaxy map and alliance.

What makes Xterium an online MMO

Not a single-player game with a leaderboard — a true multiplayer strategy.

Alliance wars 24/7

At any moment 30+ active wars run simultaneously. Troops move, diplomats negotiate, spies work.

Living community

Forum, Discord, Telegram — players actually communicate. Newcomer help, veteran guides, war reviews.

Real diplomacy

Alliances form pacts, declare wars, trade, spy. All decisions made by live players, not AI.

Asynchronous

15-30 minutes per day is enough to grow. Fleets fly for hours, you can live a normal life. No online sickness.

Team victories

Alliance tournaments with prize pools. Top alliances are not loners but coordinated teams.

Three modes

War of Alliances, Classic, Reborn — all accessible on one account. Different paces, different balance, different style.

Pick your universe

Three full online universes, each with its own community and activity.

Recommended for beginners

War of Alliances

Flagship · PvE and content

The Xterium flagship: deep PvE, anomalies, contracts and the best onboarding.

The deepest PvE and auto-expeditions Anomalies and contracts — only here The best onboarding for beginners

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Classic

Fast classic

Fast classic: big numbers, a second galaxy and a hardcore fleet.

Fast classic, big numbers Global upgrade hub Second galaxy with bonus planets

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Season · 3 months

Reborn

Seasonal sprint

A seasonal 3-month sprint — even faster than Classic.

Seasonal server for 3 months Even faster than Classic New mechanics get tested here first

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Starter guides

How to Fight in the Xterium–SAB Alliance: War Points and Tactics

Xterium Alliance War Guide: Joint Attack (JAB), war points, how to declare war, skills, and alliance factions for battle. Data from the game code.

Open

Where to Start as a Beginner in Xterium — First Steps

A Step-by-Step Guide for Xterium Newcomers: Mines, Energy, First Explorations, Base Defense, Expeditions, and Alliances. Covering game mechanics and community tips.

Open

How Not to Lose Your Fleet in Xterium — Combat and Saving

Xterium Combat Guide: How battles work (rounds, ship effectiveness), why you should save your fleet, how to build defenses, and how to avoid becoming easy prey.

Open

Frequently asked questions about online play

How many players are online?

On average 12,000+ simultaneously playing, 1,200+ active alliances. Battles 24/7. Specific numbers — on homepage, updated in real-time.

Is the game async or real-time?

Asynchronous — fleets fly for hours, buildings build in minutes or hours. Doesn't require constant online presence. 15-30 minutes per day is enough for steady growth.

What if I don't want to be in an alliance?

You can play solo. But alliances are protection from raids, access to big wars, and trade. Most experienced players recommend joining an alliance by day 2-3.

Are there regular events?

Yes — quarterly alliance tournaments, seasonal events in Reborn, special operations on holidays. Continuous wars between alliances also create live dynamics.

Where to chat with other players?

In-game alliance chat (daily coordination), forum (discussions, guides, wars), Discord and Telegram (fast comms). And VK community for Russian-speakers.